Creative powers can just as easily turn out to be destructive. It rests solely with the moral personality whether they apply themselves to good things or to bad. And if this is lacking, no teacher can supply it or take its place 。
创造性力量很容易变成破坏性力量。这只取决于人们的道德人格：是用此力量做好事或做坏事。如果人们缺乏这种道德人格，则没有一种说教能够提供它或取而代之。
学校必须与生活紧密相连，教育与劳动相结合。
Language is the only homeland.
我不害怕说出自己的想法，即使它不受欢迎。
Evolutionary psychology is not about what's unchangeable in human nature, but about what was adaptive in our ancestral environment.
True innovation often comes from unexpected directions.
In business, if you're not moving forward, you're falling behind. There's no standing still.
The degree of slowness is directly proportional to the intensity of memory. The degree of speed is directly proportional to the intensity of forgetting.
Mathematics is not about numbers, equations, computations, or algorithms: it is about understanding.