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.

There is but one truly serious philosophical problem and that is suicide.

how hard it must be to live only with what one knows and what one remembers, cut off from what one hopes for!

what doesn't kill you make you stronger and stronger

There are causes worth dying for, but none worth killing for.

I had been right I was still right I was always right. I had lived my life one way and I could just as well lived it another. I had done this and I hadn t done that. I hadn t done this thing and I had done another. And so?

... it is true that I do not respect [human life] more than I respect my own life. And if it is easy for me to kill, that is because it is difficult for me to die.