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The function of freedom is to free someone else.

You don't learn to walk by following rules. You learn by doing, and by falling over.

The best programs are written so that computing machines can perform them quickly and so that human beings can understand them clearly. A programmer is ideally an essayist who works with traditional aesthetic and literary forms as well as mathematical concepts, to communicate the way that an algorithm works and to convince a reader that the results will be correct.

心靈是解釋行為時不必要的建構。