Nothing puts a greater obstacle in the way of the progress of knowledge than thinking that one knows what one does not yet know.

The construction of the universe is certainly very much easier to explain than is that of the plant.

He swallowed a lot of wisdom, but all of it seems to have gone down the wrong way.

The wisdom of providence is as much revealed in the rarity of genius, as in the circumstance that not everyone is deaf or blind.

A sure sign of a good book is that you like it more the older you get.

What you have been obliged to discover by yourself leaves a path in your mind which you can use again when the need arises.

Man is to be found in reason, God in the passions.