Success is not the key to happiness. Happiness is the key to success. If you love what you are doing, you will be successful.
Mathematics is the poetry of logical ideas.
创新的秘密在于知道如何把你的智谋藏而不露。
通往成功的道路永远在建设中。
The greatest glory in living lies not in never falling, but in rising every time we fall.
The greatest happiness which can happen to any country is the taking of the supreme power out of the hands of the governing few and putting it into the hands of the governed many.