"The only way to deal with an unfree world is to become so absolutely free that your very existence is an act of rebellion."

The speed of learning determines the speed of growth.

The rise of China and other authoritarian states challenges the idea that liberal democracy is the only viable political system.

The founders of a new colony, whatever Utopia of human virtue and happiness they might originally project, have invariably recognized it among their earliest practical necessities to allot a portion of the virgin soil as a cemetery, and another portion as the site of a prison.

在数学中，旅程往往比目的地更重要。