On Life:
Life is absurd.
On Death:
There will be no lasting peace either in the heart of individuals or in social customs until death is outlawed.
I do not want to believe that death is the gateway to another life. For me, it is a closed door. I do not say it is a step we must all take, but that it is a horrible and dirty adventure.
On Courage:
Those who lack the courage will always find a philosophy to justify it.
On Knowledge:
After all manner of professors have done their best for us, the place we are to get knowledge is in books. The true university of these days is a collection of books.
The modern mind is in complete disarray. Knowledge has stretched itself to the point where neither the world nor our intelligence can find any foot-hold. It is a fact that we are suffering from nihilism.
On God:
Can one be a saint if God does not exist That is the only concrete problem I know of today.
There is but one freedom, to put oneself right with death. After that everything is possible. I cannot force you to believe in God. Believing in God amounts to coming to terms with death. When you have accepted death, the problem of God will be solved and not the reverse.
On Christianity:
If Christianity is pessimistic as to man, it is optimistic as to human destiny. Well, I can say that, pessimistic as to human destiny, I am optimistic as to man.