人是一种做交易的动物，没有其他动物会这样做，没有狗会和另一只狗交换骨头。
Man is an animal that makes bargains: no other animal does this no dog exchanges bones with another.
The young do not know enough to be prudent, and therefore they attempt the impossible – and achieve it, generation after generation.
The purpose of psychotherapy is to set people free.
Science is not only compatible with spirituality; it is a profound source of spirituality.
"The world is a tragedy to those who feel, but a comedy to those who think."
最大的挑战是每天都要进步。
