You can't just give up on something because it's hard.

我不相信贫穷，我相信努力工作。

If you think you understand quantum mechanics, you don't understand quantum mechanics.

The truth about the world, he said, is that anything is possible. Had you not seen it all from birth and thereby bled it of its strangeness it would appear to you for what it is, a hat trick in a medicine show, a fevered dream, a trance bepopulate with chimeras having neither analogue nor precedent, an itinerant carnival, a migratory tentshow whose ultimate destination after many a pitch in many a mudded field is unspeakable and calamitous beyond reckoning.

You have to be able to laugh at yourself, to not take yourself too seriously.