譬犹使人负剑,而求其寿也。
就好像让人伏在剑刃上,而期望他能长寿一样。
The most important skill for an empirical researcher is not math, but judgment.
你不能害怕失败。这是你成功的唯一途径。
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.