Not the zeal alone of those who seek Him proves God, but the blindness of those who seek Him not.

Since we cannot be universal and know all that is to be known of everything, we ought to know a little about everything. For it is far better to know something about everything than to know all about one thing. This universality is the best. If we can have both, still better; but if we must choose, we ought to choose the former.

The arithmetical machine produces effects that approach nearer to thought than all the actions of animals. But it does nothing that would enable us to attribute will to it, as to the animals.

All our troubles come from not being able to be alone.

The immortality of the soul is a matter which is of so great consequence to us and which touches us so profoundly that we must have lost all feeling to be indifferent about it.

Those honor nature well, who teach that she can speak on everything...

If a man is not made for God, why is he happy only in God?