The purpose of life is not to be happy. It is to be useful, to be honorable, to be compassionate, to have it make some difference that you have lived and lived well.

"Under capitalism, we are all precarious, but some are more precarious than others."

To love is to be vulnerable.

The heart has its own memory, and it's a memory that doesn't always consult the brain.

The most dangerous thing is not failure, but complacency.

生物体适应度越高，其适应性往往越低。