What can I know? What ought I to do? What can I hope?
What is a good enough principle for an American citizen ought to be good enough for the working man to follow.
Every boy in a free country ought to be instructed in boxing, wrestling, and the use of weapons. Every young man ought to be drilled. Every householder ought, at least, to have a right to own a rifle, and should know how to make cartridges.
Most works of art, like most wines, ought to be consumed in the district of their fabrication.
The law of humanity ought to be composed of the past, the present, and the future, that we bear within us; whoever possesses but one of these terms, has but a fragment of the law of the moral world.
I would like us to think about it more explicitly, and not take our intuitions as the given of ethics, but rather to reflect on it, and be more open about the fact that something is an ethical issues and think what we ought to do about it.
If we must not act save on a certainty, we ought not to act on religion, for it is not certain. But how many things we do on an uncertainty, sea voyages, battles!
Let men decide firmly what they will not do, and they will be free to do vigorously what they ought to do.
Nature has placed mankind under the governance of two sovereign masters, pain and pleasure. It is for them alone to point out what we ought to do, as well as to determine what we shall do.
We are not to give credit to the many, who say that none ought to be educated but the free; but rather to the philosophers, who say that the well-educated alone are free.