数学不是一项观赏性运动;要理解它,必须积极参与其中。
世俗的儒者不考察,认为工商是末业,妄加议论抑制。
Mathematics is the most beautiful and most powerful creation of the human spirit.
The greater the obstacle, the more glory in overcoming it.
"A writer’s duty is to disturb the comfortable and comfort the disturbed."