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.