Observation - activity of both eyes and ears.

We go by the major vote, and if the majority are insane, the sane must go to the hospital.

Much that we call evil is really good in disguises; and we should not quarrel rashly with adversities not yet understood, nor overlook the mercies often bound up in them.

Temptation is a fearful word. It indicates the beginning of a possible series of infinite evils. It is the ringing of an alarm bell, whose melancholy sounds may reverberate through eternity. Like the sudden, sharp cry of "Fire!" under our windows by night, it should rouse us to instantaneous action, and brace every muscle to its highest tension.

Love not only occupies the higher lobes of the brain, but crowds out the lower to make room for its expansion.

It is well, when the wise and the learned discover new truths; but how much better to diffuse the truths already discovered, amongst the multitude! Every addition to true knowledge is an addition to human power; and while a philosopher is discovering one new truth, millions may be propagated amongst the people. Diffusion, then, rather than discovery, is the duty of our government.

Knowledge is but an instrument, which the profligate and the flagitious may use as well as the brave and the just.