Medical men do not know the drugs they use, nor their prices.

That things are changed, and that nothing really perishes, and that the sum of matter remains exactly the same, is sufficiently certain.

The way of fortune is like the milky way in the sky; which is a meeting, or knot, of a number of small stars, not seen asunder, but giving light together : so are there a number of little and scarce discerned virtues, or rather faculties and customs, that make men fortunate.

Even within the most beautiful landscape, in the trees, under the leaves the insects are eating each other; violence is a part of life.

For knowledge, too, is itself power.

Money is a great treasure that only increases as you give it away.

If a man's wit be wandering, let him study the mathematics.