If you are insecure, guess what? The rest of the world is, too. Do not overestimate the competition and underestimate yourself. You are better than you think.
数学的美在于它既精确又富有创造性。
The only limit to our realization of tomorrow will be our doubts of today.
声音不会因为细小，就听不见；行为不会因为隐蔽，就看不见。点评：东汉太守杨震曾经举荐秀才王密为昌邑令。一次，杨震路过昌邑。王密夜里携带十斤黄金前来拜见。杨振对王密说：「我之前以为很了解你，可现在却疑惑了，为什么呢？」杨密一听，知道杨震不想收下黄金，就说：「更深人静，没人知道啊。」杨震反驳道：「天知，神知，我知，你知。怎么会是没人知道呢？」
The world is independent of my will.