Whatever is a reality today, whatever you touch and believe in and that seems real for you today, is going to be - like the reality of yesterday - an illusion tomorrow.

I would love to spend all my time writing to you; I'd love to share with you all that goes through my mind, all that weighs on my heart, all that gives air to my soul; phantoms of art, dreams that would be so beautiful if they could come true.

Our whole knowledge of the world hangs on this very slender thread: the re-gu-la-ri-ty of our experiences

Life is full of infinite absurdities, which, strangely enough, do not even need to appear plausible, since they are true

When you say you are in love with humanity, you are well satisfied with yourself.

Whatever is a reality today, whatever you touch and believe in and that seems real for you today, is going to be -- like the reality of yesterday -- an illusion tomorrow.