The knowledge of the circumstances of which we must make use never exists in concentrated or integrated form, but solely as the dispersed bits of incomplete and frequently contradictory knowledge which all the separate individuals possess.
The biggest lesson I've learned is to trust yourself.
我不是一个完美的人，但我每天都在努力变得更好。
The deepest theorems often have the simplest proofs - if you look at them from the right angle.