The process of doing mathematics is more important than the result.

"To be a human being means to possess a sense of guilt."

When someone is nasty， rude， hateful， or mean with you， pretend they have a disease. That makes it easier to have empathy toward them which can soften the conflict.

If a listener nods his head when you're explaining your program, wake him up.

A school should not just be a place to learn, but a place that inspires learning.

The death of a beautiful woman is, unquestionably, the most poetical topic in the world.

要养活世界，我们必须首先学会尊重地球的极限。