God makes nothing without order, and everything that forms itself develops imperceptibly out of small parts.

Every mind has a horizon in respect to its present intellectual capacity but not in respect to its future intellectual capacity.

...a distinction must be made between true and false ideas, and that too much rein must not be given to a man's imagination under pretext of its being a clear and distinct intellection.

There are also two kinds of truths, those of reasoning and those of fact. Truths of reasoning are necessary and their opposite is impossible, and those of fact are contingent and their opposite is possible. When a truth is necessary its reason can be found by analysis, resolving it into more simple ideas and truths until we reach those which are primitive.

To love is to find pleasure in the happiness of others.

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

Nihil est sine ratione. There is nothing without a reason.