“Absence of thought is not stupidity; it can be found in highly intelligent people, and a wicked heart is not its cause; it is probably the other way around, that wickedness may be caused by absence of thought.”

This definition of thoughtlessness is important to Arendt’s thesis, because it shows that anyone can exhibit thoughtlessness—even people who are otherwise good. In her own life, Arendt witnessed how thinkers and philosophers, including her mentor Martin Heidegger, could end up supporting the Nazi regime. Her argument that thoughtlessness creates wickedness reveals how so many German citizens thoughtlessly accepted the rhetoric of hate.

“To be alive means to live in a world that preceded one’s own arrival and will survive one’s own departure.”

Central to all of Arendt’s works is The Plurality of Experience and Responsibility. She rejects philosophical thought that places the self in a position above the whole. In this passage, she reminds readers of their position within plurality: The world exists and carries on independent of the individual.

“Not only do appearances never reveal what lies beneath them of their own accord but also, generally speaking, they never just reveal: they also conceal.”

Arendt argues for The Primacy of Appearances, breaking from a tradition of thought that gives preference to Being and the metaphysical realm. She admits that the apparent world is full of semblances and that the work of the apparent world is to conceal. However, she asserts that this is further reason to interrogate the world of appearance rather than turn away from it.

“Since we live in an appearing world, is it not much more plausible that the relevant and the meaningful in this world of ours should be located precisely on the surface?”

In this passage, Arendt explores the ways in which people continuously return to the apparent world. They may retreat into their thinking ego or explore Being, but they will always inevitably need to come back to worldly desires and needs. Arendt also cites the way all living things are fashioned for perception by others as proof of The Primacy of Appearance.

“What becomes manifest when we speak about psychic experiences is never the experience itself but whatever we think about it when we reflect upon it.”

When humans engage the thinking ego, they separate themselves from the apparent world. All thoughts are reflections; they look backward. They are distinguished from willing, which looks to the future.

“Error is the price we pay for truth, and semblance is the price we pay for the wonders of appearance.”

Later in her work, Arendt explains that contingency, or not knowing, is the price humans pay to live in a world of beautiful and diverse appearance. This chapter provides the other bookend to this idea. Arendt turns away from a philosophy that is focused on uncovering pure truth. Instead, she embraces the Socratic method of questioning in circles. Error, she explains, is fundamental to thought, and semblance is inevitable in the apparent world. The trade-off for these falsities is a rich and meaningful life.

“Whatever appears is meant for a perceiver, a potential subject no less inherent in all objectivity than a potential object is inherent in the subjectivity of every intentional act.”

When one considers the wings of a butterfly or the petals of a flower, one can understand Arendt’s argument that all living things are designed for perception. Arendt suggests that this role of perception in life is evidence of The Plurality of Experience and Responsibility. Existence is predicated on the ongoing relationship between the perceiver and the perceived.

“Thinking can seize upon and get hold of everything real—event, object, its own thoughts; their realness is the only property that remains stubbornly beyond reach.”

Although the thinking ego is separate from the apparent world, it is connected to it by a thread. Thinking requires the existence of the appearing world and plurality. Arendt argues that this shows The Primacy of Appearances and that reality lies in the apparent world rather than in the thinking ego.

“Cognition and the thirst for knowledge never leave the world of appearances altogether.”

In this passage, Arendt describes how scientists are reliant upon the apparent world in their cognition. While they may retreat into the thinking ego, their thoughts reflect on appearances, and they will inevitably return.

“All thought arises out of experience, but no experience yields any meaning or even coherence without undergoing the operations of imagining and thinking.”

The book distinguishes between truth and meaning, suggesting that the priority given to truth by philosophers and scientists is a mistake. Instead, Arendt proposes that meaning is what gives life value and richness and that meaning emerges from the thinking ego.

“And it is not because man is a thinking being but because he exists only in the plural that his reason, too, wants communication and is likely to go astray if deprived of it.”

As Arendt explores the relationship between language and thinking, she finds that the root of language is The Plurality of Experience and Responsibility. All humans think in language, and the function of language is to communicate with others. This shows that plurality is the undercurrent of thought.

“If Being replaced the Olympian gods, then philosophy replaced religion. Philosophizing became the only possible ‘way’ of piety, and this new god’s newest characteristic was that he was the One.”

Arendt is critical of professional thinkers who give primacy to Being over appearance. She outlines how this philosophical trend has equated the self with the divine, which she views as a rejection of plurality. Arendt details how plurality is the foundation for good instead of evil. The Moral Importance of Thinking emerges when thinking is rooted in the understanding of the collective whole over the self.

“If while perceiving an object outside myself I decide to concentrate on my perception, on the act of seeing instead of the seen object, it is as if I have lost the original object, because it loses its impact on me.”

One of the issues with science, according to Arendt, is that it entirely removes the individual from the world of appearances. Objective observation requires the scientist to look at the apparent world without the context of the self within it. Arendt explains that humans cannot remove themselves from the apparent world; therefore, to study the world independent of their own experience is to miss the full picture.

“In order to know what justice is, you must know what knowledge is, and in order to know that, you must have a previous, unexamined notion of knowledge.”

Immanuel Kant introduced the idea of the ground, the abstract forces that undergird the apparent world. However, Arendt asserts that one cannot understand these abstract concepts until they have encountered them in the apparent world, emphasizing the importance of appearances in human experience and thought.

“By shielding people from the dangers of examination, it teaches them to hold fast to whatever the prescribed rules of conduct may be at a given time in a given society.”

While Arendt champions thinking throughout the book, she also recognizes that it can be dangerous. Her understanding of the dangers of thinking comes from watching her friends retreat into the thinking ego and use cognition to justify wrongdoing. However, she argues that this is not a reason to abandon the thinking ego altogether. Thinking is necessary to challenge authority and the status quo. It can be a powerful tool for morality when it is based in plurality, reinforcing The Moral Importance of Thinking.

“The self that we all are must take care not to do anything that would make it impossible for the two-in-one to be friends and live in harmony.”

Here, Arendt shows one of the ways that The Moral Importance of Thinking manifests. Since people who engage frequently with the thinking ego must reflect upon their own lives and actions, it would be counterintuitive for them to engage in evil. Arendt proposes that the thinking ego can ensure that an individual will live in a way that will not create discord when they retreat into the thinking ego.

“Without ‘him,’ there would be no difference between past and future, but only everlasting change.”

This quotation references a parable by Kafka that explores the relationship between the self and time in the thinking ego. Once again, Arendt argues against the removal of the self from the equation. In the parable, the man stands between the past and the future, each pushing against him. Arendt uses the parable to show that the thinking ego does not exist in time, but is a mediator of experience.

“The Will is suspected of being a mere illusion, a phantasm of consciousness, a kind of delusion inherent in consciousness’ very structure.”

The Will is a point of contention in the world of philosophy. Greek philosophers did not give a name to the Will; they instead emphasized inclination by choosing between desire and reason with happiness as the ultimate goal. The Will is an important part of Arendt’s discussion on The Moral Importance of Thinking. If the Will does not exist, then there is no framework for humans to engage with morality of their own accord.

“The trouble has always been that free will—whether understood as freedom of choice or as the freedom to start something unpredictably new—seems utterly incompatible, not just with divine Providence, but with the law of causality.”

Arendt underscores the paradox of free will by presenting it as both liberating and destabilizing. This quote speaks to the tension between human spontaneity and necessity, emphasizing The Moral Importance of Thinking. By framing free will as “trouble,” she suggests that freedom itself is unsettling yet essential.

“Both, it is true, make present to our mind what is actually absent, but thinking draws into its enduring present what either is or at least has been, whereas willing, stretching out into the future, moves in a region where no such certainties exist.”

Arendt creates an important distinction between thinking and willing—one grounded in the past and present, the other in uncertainty and the future. This dichotomy resonates with The Plurality of Experience and Responsibility, since humans are pulled between memory and possibility, each demanding a different kind of accountability.

“Where lies the good? In the will. Where lies evil? In the will. Where lies neither? In what is not within the will’s control.”

This quote from Epictetus turns a complex idea into a simple, memorable statement. Epictetus places both good and evil in the Will, showing that responsibility comes from within people, not from outside forces. This ties directly to the theme of The Moral Importance of Thinking, since humans must use thought to guide the will toward good.

“The solution of the Will’s inner conflict comes about through a transformation of the Will itself, its transformation into Love.”

Here, Arendt suggests that the Will’s constant struggle can be resolved if it is transformed into love. The will needs more than a bare choice between one action or another—it needs an attitude that opens it toward others. Arendt’s connection between love and the Will is tied to her theme The Plurality of Experience and Responsibility.

“What we call truth is those propositions without which we could not go on living. Not reason but our will to live makes truth compelling.”

Arendt redefines truth as something that helps humans live, not just an abstract idea. This reflects The Primacy of Appearance, since truth shows up in the way it supports life rather than in timeless rules. Her phrase “without which we could not go on living” makes truth sound like a vital condition, almost like food or air. This shows how truth is tied to human need and experience, not only to logic.