The enthusiasm of old men is singularly like that of infancy.

I have never felt any rest in sleep. For a few seconds I am numbed, then a new life begins, freed from the conditions of time and space, and doubtless similar to that state which awaits us after death. Who knows if there is not some link between those two existences and if it is not possible for the soul to unite them now?

The tree of knowledge is not the tree of life! And yet can we cast out of our spirits all the good or evil poured into them by so many learned generations? Ignorance cannot be learned.

The key to success is simple. Make people dream.

Man, do you think yours is the only soul? Look around you. Everything that you see quivers with being. Though your thoughts are free, one thing you do not think about: the whole. Beasts have a mind; respect it. Flowers too- look at one. Nature brought forth each petal. There is a mystery that sleeps in metal. Everything feels, and has power over you.

I have always differentiated between two types of friends; those who want proofs of friendship, and those who do not. One kind loves me for myself and the others for themselves.

How have I been able to live so long outside Nature without identifying myself with it? Everything lives, moves, everything corresponds; the magnetic rays, emanating either from myself or from others, cross the limitless chain of created things unimpeded; it is a transparent network that covers the world, and its slender threads communicate themselves by degrees to the planets and stars. Captive now upon earth, I commune with the chorus of the stars who share in my joys and sorrows.