最好的儿童书籍是那些不会居高临下地对孩子说话的书籍。

The greatest obstacle to being heroic is the doubt whether one may not be going to prove one's self a fool; the truest heroism is to resist the doubt; and the profoundest wisdom, to know when it ought to be resisted, and when to be obeyed.

In mathematics, as in life, the most elegant solutions often arise from a deep understanding of the problem.

The sun, the sea, the wind—these are the eternal poets.

"Cinema is a matter of what's in the frame and what's out."