The night is a great dream, but the stars are its reality.
What's terrible is to pretend that second-rate is first-rate. To pretend that you don't need love when you do; or you like your work when you know quite well you're capable of better.
The most profound ideas in mathematics often arise from the simplest observations.
当人微笑时,世界爱了他。当他大笑时,世界便怕他了。