A proof is a way to convince yourself and others that something is true.

"Any human anywhere will blossom in a hundred unexpected talents and capacities simply by being given the opportunity to do so."

The secret of joy in work is contained in one word – excellence. To know how to do something well is to enjoy it.

我不相信遗憾。遗憾是浪费时间。它们是过去在现在束缚你。