The only certain things in life are death and taxes!

I am about courting a girl I have had but little acquaintance with. How shall I come to a knowledge of her faults, and whether she has the virtues I imagine she has? Answer. Commend her among her female acquaintances.

If thou hast wit and learning, add to it wisdom and modesty.

What science can there be more noble, more excellent, more useful for men, more admirably high and demonstrative, than this of mathematics?

That man alone loves himself rightly who procures the greatest possible good to himself through the whole of his existence and so pursues pleasure as not to give for it more than it is worth.

[T]he more public provisions were made for the poor, the less they provided for themselves, and of course became poorer . . . [taking] away from before their eyes the greatest of all inducements to industry, frugality, and sobriety, by giving them a dependence of somewhat else than a careful accumulation during youth and health for support in age and sickness.

There is no such thing as a good war or a bad peace.