Laughter and tears are both responses to frustration and exhaustion. I myself prefer to laugh, since there is less cleaning up to do afterward.

The best way to predict the future is to invent it.

The study of algorithms is as much about creativity as it is about logic and mathematics.

The same things do not produce the same effects， though conjoined with the same subjects.

Immediately pay what you owe to vendors， workers， contractors. They will go out of their way to work with you first next time.

The earth is a dot. The moon is a dot. The sun is a dot. The stars are dots.

数学之美不仅在于其抽象的优雅，还在于其建模和解决现实世界问题的深刻能力。