Night brings our troubles to the light, rather than banishes them.

It is the superfluous things for which men sweat, - superfluous things that wear our togas theadbare, that force us to grow old in camp, that dash us upon foreign shores.

The wise man lacked nothing but needed a great number of things, whereas the fool, on the other hand, needs nothing (for he does not know how to use anything) but lacks everything.

I will govern my life and thoughts as if the whole world were to see the one and read the other, for what does it signify to make anything a secret to my neighbor, when to God, who is the searcher of our hearts, all our privacies are open?

Nature does not reveal all her secrets at once. We imagine we are initiated in her mysteries: we are, as yet, but hanging around her outer courts.

You should keep on learning as long as there is something you do not know.

For what else is Nature but God and the Divine Reason that pervades the whole universe and all its parts.