To be what we are, and to become what we are capable of becoming, is the only end of life.
I don't think you need to be sad to write a sad song.
The context is so important. The context is not just the physical context, but also the historical and cultural context.
Sometimes the most profound mathematics comes from playing with simple ideas until they reveal their hidden complexity.
想象力是对抗现实最强大的武器。