当一个人做出彻底的蠢事，那通常是出于最高尚的动机。
Whenever a man does a thoroughly stupid thing, it is always from the noblest of motives.
Learning consists in the modification of certain mediating processes which operate between the stimulus and the response.
The use of a program to prove the 4-color theorem will not change mathematics - it merely demonstrates that the theorem, a challenge for a century, is probably not important to mathematics.