The most effective debugging tool is still careful thought, coupled with judiciously placed print statements.

Reading furnishes the mind only with materials of knowledge; it is thinking that makes what we read ours.

I always try to do something different, something that challenges me.

真実はいつも一つではない。それぞれの視点から見た真実がある。

The biographer's task is to resurrect the past, not to judge it.

优秀和卓越的区别在于额外的努力。