可怜的是那些快乐取决于他人许可的人。
Poor is the man whose pleasures depend on the permission of another.
永远不要低估为更大目标迈出的小而持续的步骤的力量。
The relation between what we see and what we know is never settled.
To live is the rarest thing in the world. Most people exist, that is all.
Behavior is governed by the same laws in humans and animals.