Man is fully responsible for his nature and his choices.

This is what I thought: for the most banal even to become an adventure, you must (and this is enough) begin to recount it. This is what fools people: a man is always a teller of tales, he sees everything that happens to him through them; and he tries to live his own life as if he were telling a story. But you have to choose: live or tell.

Man is nothing else but what he makes of himself.

I’ve dropped out of their hearts like a little sparrow fallen from its nest. So gather me up, dear, fold me to your heart – and you’ll see how nice I can be.

My thought is me: that's why I can't stop. I exist because I think… and I can't stop myself from thinking. At this very moment - it's frightful - if I exist, it is because I am horrified at existing. I am the one who pulls myself from the nothingness to which I aspire.

Respectable society believed in God in order to avoid having to speak about him.

Once we know and are aware, we are responsible for our action and our inaction. We can do something about it or ignore it. Either way, we are still responsible.