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The only sensible ends of literature are, first, the pleasurable toil of writing; second, the gratification of one's family and friends; and lastly, the solid cash.

科學是使復雜變得可理解的藝術。

The most dangerous enemy is often ourselves.

I have learned to seek my happiness by limiting my desires， rather than in attempting to satisfy them.

我們必須投資未來，而不僅僅是開發現在。

Government has no other end, but the preservation of property.