在数学中,你不理解事物。你只是习惯它们。
勇气是能站起来侃侃而谈。勇气也是能坐下来静静倾听。
母子关系是矛盾的,在某种意义上,是悲剧性的。它需要母亲最强烈的爱,然而这种爱必须帮助孩子离开母亲,变得完全独立。
Never underestimate the power of small, consistent improvements.
The most beautiful as well as the most ugly inclinations of man are not part of a fixed biologically given nature, but result from the social process which creates man.