Perfect numbers like perfect men are very rare.

How can you be certain that your whole life is not a dream?

We never understand a thing so well,and make it our own, as when we have discovered it for ourselves.

Omnia apud me mathematica fiunt.

I concluded that I might take as a general rule the principle that all things which we very clearly and obviously conceive are true: only observing, however, that there is some difficulty in rightly determining the objects which we distinctly conceive.

It's the familiar love-hate syndrome of seduction: "I don't really care what it is I say, I care only that you like it."

Your joy is your sorrow unmasked. And the self-same well from which your laughter rises was often-times filled with your tears.