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The American farmer is the only man in our economy who has to buy everything he buys at retail, sell everything he sells at wholesale, and pay the freight both ways.

The problem of the modern age is the problem of the individual's self-preservation in the face of the overwhelming power of the social mechanism.

Illness is the night-side of life, a more onerous citizenship. Everyone who is born holds dual citizenship, in the kingdom of the well and in the kingdom of the sick.

創新的關鍵不僅在于創造新技術，還在于理解如何應用它們來解決現實世界的問題。