人性本善,社会使其败坏。
The method of psychology must be as exact as that of the physical sciences.
勇气并不总是咆哮。有时候,勇气是一天结束时那个轻声说"明天我再试一次"的声音。
The beauty of mathematics is that it is one of the few areas of human endeavor where absolute truth can be known.
I don't do things for the reaction or the accolade. I do things because I love doing them.