No one is a light unto himself, not even the sun.

Yes, one must suffer, even in vain, so as not to have lived in vain.

Man, when he does not grieve, hardly exists.

Whatever I take, I take too much or too little; I do not take the exact amount. The exact amount is no use to me.

All the suns labor to kindle your flame and a microbe puts it out.

He who does not know how to believe, should not know.

You can owe nothing, if you give back its light to the sun.