The world is the totality of facts， not of things.
世界是事实的总体，而不是事物的总体。
【译文】 孔子说：“人的本性是相近的，只是习俗使人有了差别。”
To eat bread without hope is still slowly to starve to death.
Either you repeat the same conventional doctrines everybody is saying, or else you say something true, and it will sound like it's from Neptune.
The most important thing in mathematics is to understand the concepts, not just to memorize the formulas.