In this section, Isaacson closely examines key phrases from the Declaration of Independence to reveal their philosophical foundations. His analysis of “unalienable Rights” and “Life, Liberty and the pursuit of Happiness” (25) demonstrates that these ideas emerged from earlier Enlightenment political thought. By tracing the language from John Locke to George Mason and finally to Thomas Jefferson, Isaacson establishes that the Declaration developed through the adaptation and refinement of existing ideas about rights and government. This approach reinforces his theme of The Importance of Collaboration and Revision, by showing that Jefferson drew upon earlier philosophical and political language before the drafting committee revised the document itself. Isaacson argues that the Declaration’s language gave complex principles of social contract theory an accessible political form for a wider public audience.

Isaacson’s analysis carefully defines the specific meaning of the rights asserted in the Declaration. He clarifies that “unalienable rights” are understood as inherent rights that exist prior to the formation of governments. By citing Mason’s Virginia Declaration of Rights, he explains that these rights cannot be surrendered by individuals or revoked by the state. Isaacson uses this distinction to explain the revolutionary claim that governments derive legitimacy from the protection of preexisting rights. He also presents Jefferson’s substitution of “the pursuit of Happiness” (25) for Locke’s “property” as a broader interpretation of individual freedom and human fulfillment. Locke connected liberty closely to the protection of property and the preservation of the results of one’s labor. Jefferson’s phrasing expands the discussion of rights beyond material ownership to include personal fulfillment, opportunity, and self-determination. Through this shift in language, Isaacson shows how the Declaration framed liberty as connected to personal advancement and self-determination.

The book then shifts from individual rights to the shared institutions that support civic life. Here, Isaacson introduces and develops the theme of The Commons as the Foundation of Opportunity. He defines the “commons” as shared public goods, institutions, and civic spaces that contribute to democratic participation and social opportunity. To illustrate this idea, Isaacson presents Benjamin Franklin as a leading example of civic institution-building in early America. Franklin’s initiatives in Philadelphia, from the volunteer fire corps to the public library, serve as examples of how citizens can create institutions that expand access to knowledge, safety, and public resources. Through Franklin’s example, Isaacson argues that American civic life historically depended upon cooperation, voluntary associations, and shared public investment alongside individual enterprise.

Building on the example of Franklin, Isaacson links the strength of the commons to social cohesion, civic participation, and economic opportunity. He connects this discussion to the work of John Locke, whose justification for private property included the famous proviso that there must be “enough, and as good, left in common for others” (28). Isaacson interprets this idea as support for maintaining shared public institutions and resources alongside private enterprise. In his view, the commons, public schools, libraries, and infrastructure, provides shared access to opportunity and participation within civic life. Isaacson argues that these institutions help strengthen social bonds and reduce resentment connected to economic inequality by giving citizens access to education, public resources, and avenues for self-improvement. Through this argument, he connects the “pursuit of Happiness” (25) to shared civic institutions and public resources that expand access to opportunity and participation in public life.