我思故我在已被废弃；我们应说，我感受故我在。
在我们身上，没有什么是永恒的。
我们从不如我们看起来那样幸福。
人生的意义在于人自己赋予它的意义。
他人即地狱。
I think therefore I am has been discarded; we should say, I feel therefore I am.
There is nothing eternal in us.
We are never as happy or as unhappy as we imagine.
Life has no meaning a priori. It is up to you to give it a meaning.
Freedom is what you do with what's been done to you.
Man is condemned to be free.