Henry David Thoreau Ethic Quotations

Mathematics should be mixed not only with physics but with ethics.

You cannot receive a shock unless you have an electric affinity for that which shocks you.

What is morality but immemorial custom? Conscience is the chief of conservatives.

Don't be too moral. You may cheat yourself out of much life so.

The study of geometry is a petty and idle exercise of the mind, if it is applied to no larger system than the starry one. Mathematics should be mixed not only with physics but with ethics; that is mixed mathematics.