You have to trust the process and believe in yourself.
你必须相信过程并相信自己。
Concerning the gods, I cannot know either that they exist or that they do not exist, nor what form they might have, for there is much to prevent one's knowing: the obscurity of the subject and the shortness of man's life.
The principles of logic and mathematics are true universally simply because we never allow them to be anything else.