Oh, how great is the power of truth! which of its own power can easily defend itself against all the ingenuity and cunning and wisdom of men, and against the treacherous plots of all the world.

In a discussion of this kind our interest should be centered not on the weight of the authority but on the weight of the argument. Indeed the authority of those who set out to teach is often an impediment to those who wish to learn. They cease to use their own judgment and regard as gospel whatever is put forward by their chosen teacher.

In a disordered mind, as in a disordered body, soundness of health is impossible.

A nation can survive its fools, even the ambitious. But it cannot survive treason from within....for the traitor appears not to be a traitor...he rots the soul of a nation...he infects the body politic so that it can no longer resist.

Old age, especially an honored old age, has so great authority, that this is of more value than all the pleasures of youth.

Hatred is settled anger.

No man should so act as to make a gain out of the ignorance of another.