要记住，人之所以走入迷途，并不是由于他的无知，而是由于他自以为知。
即使只有一毫粗疏的地方，就不能准确地认识事理，所以说一定要精确。不然，众说纷纭必会产生疑惑；仅存在一丁点杂念，便不能坚守事理，故而必须专心，否则在利害面前必定会经不起考验。
Your work is going to fill a large part of your life, and the only way to be truly satisfied is to do what you believe is great work.
Don’t tell me how good you make it; tell me how good it makes me when I use it.
The only real prison is the one we build for ourselves.