..This is why the ultimate reason of things must lie in a necessary substance, in which the differentiation of the changes only exists eminently as in their source; and this is what we call God.

Philosophy consists mostly of kicking up a lot of dust and then complaining that you can't see anything.

Every substance is as a world apart, independent of everything else except God.

The greatness of a life can only be estimated by the multitude of its actions. We should not count the years, it is our actions which constitute our life.

Nothing is accomplished all at once, and it is one of my great maxims, and one of the most completely verified, that Nature makes no leaps: a maxim which I have called the law of continuity.

Take what you need, do what you should, you will get what you want.

I hold that it is only when we can prove everything we assert that we understand perfectly the thing under consideration.