人类社会生活的行为流是由存在的物质条件构成的。

唯一真实的是当下这一刻。

The only good is knowledge and the only evil is ignorance.

The more we learn about the true nature of animals, the more we realize how much we have in common with them.

恩泽中可能潜藏祸患，所以得意时要能尽早回头；失败后反而能够成功，因此失意时千万不要气馁。

If you want to fly, you have to give up the things that weigh you down.