美德与伟大不能兼得。

疯子带瞎子走路，这就是这个时代的病态。

In science, the credit goes to the man who convinces the world, not to the man to whom the idea first occurs.

'Jeff, what does Day 2 look like?' 'Day 2 is stasis. Followed by irrelevance. Followed by excruciating, painful decline. Followed by death. And that is why it is always Day 1.' To be sure, this kind of decline would happen in extreme slow motion. An established company might harvest Day 2 for decades, but the final result would still come.

To teach mathematics is to inspire the next generation of thinkers and problem solvers.

文章贵在简洁，简洁则明了；贵在疏朗，疏朗则通畅；贵在深远，深远则持久。