The Bible is one of the greatest blessings bestowed by God on the children of men.

It was the best of times, it was the worst of times, it was the age of wisdom, it was the age of foolishness, it was the epoch of belief, it was the epoch of incredulity, it was the season of Light, it was the season of Darkness, it was the spring of hope, it was the winter of despair, we had everything before us, we had nothing before us, we were all going direct to Heaven, we were all doing direct the other way.

The past, like the future, is indefinite and exists only as a spectrum of possibilities.

我这一代人最伟大的发现是，一个人可以通过改变态度来改变他的生活。

In computational complexity, we are not just dealing with the limits of what we can compute, but also with the limits of what we can prove.

Don’t wait until they tell you you are ready. The world might say you are not allowed to yet. I waited a long time in the world before I gave myself permission to fail. Please, Don’t even bother asking, don't bothering telling the world you are ready. Show it. Do it.