You’ll never be able to please everybody, so just do what makes you happy.

不够丑陋。

Youth is not a time of life; it is a state of mind; it is not a matter of rosy cheeks, red lips and supple knees; it is a matter of the will, a quality of the imagination, a vigor of the emotions; it is the freshness of the deep springs of life.

I don’t think about being the best, I think about being better than yesterday.

I'm not a prophet or a stone aged man, just a mortal with potential of a superman.

All creatures come into the world bringing with them the memory of justice.

The most important thing is to have a vision of what you want to do and then to have the persistence to carry it out.

In the realm of computational complexity, every problem is a universe waiting to be explored.