Recapturing the Spirit of Enterprise

George Gilder's 1984 work, updated in 1992, is the foundational text of supply-side economics as a theory of innovation and growth. Gilder argues that the entrepreneur — not the state, not capital, and not labor — is the primary driver of economic progress, and that the key to prosperity is an economic system that encourages risk-taking by rewarding success and allowing failure. The book traces how tax policy, regulation, and cultural attitudes toward wealth creation either unleash or suppress the entrepreneurial spirit that is the real source of national wealth.

Andreessen paired this book with his 2020 essay "It's Time to Build," calling it an argument for "how economic systems that encourage aggressive entrepreneurship build the most for the benefit of the most." Gilder's book is the most direct intellectual ancestor of the a16z worldview in this batch — it is the theoretical case that enterprise, not central planning or redistribution, is what lifts living standards.

For a founder, the book provides the language to argue that starting a company, taking a risk, and allocating capital to a new idea is the most productive thing an economy can do. Gilder's thesis is that the supply side (entrepreneurs, inventors, builders) drives everything, not the demand side (consumers, government spending). This matters when you are building in a world where the default assumption of regulators, politicians, and even many businesspeople is that the economy is a zero-sum game of dividing an existing pie. Gilder says the pie is made by people like you. The book also surfaces a critical tension: the same society that benefits from the entrepreneur's risk-taking tends to tax and regulate that risk-taking once it succeeds.