Reason

Thought constitutes the greatness of man.

Reason, observation, and experience; the holy trinity of science.

He is a true fugitive, that flies from reason, by which men are sociable.

When we have the decrees of Nature, authority goes for nothing; reason is absolute.

For to be possessed of a vigorous mind is not enough; the prime requisite is rightly to apply it.

It does not suffice that the understanding be good - it must be well applied.

The greatest minds, as they are capable of the highest excellences, are open likewise to the greatest aberrations.

For then Reason, like a bad Hound, spends upon a false Scent, and forsakes the question first started.

Never spend your money before you have it.

Lack of money is the root of all evil

It is impossible to love and to be wise

Prejudices are what fools use for reason

Few people know how to be old

Use your head to save your feet

Reason is our soul's left hand, faith her right

A mediocre mind thinks it writes divinely; a good mind thinks it writes reasonably

It's motive alone which gives character to the actions of men

Yet consider now, whether women are not quite past sense and reason, when they want to rule over men

He that cannot reason is a fool. He that will not is a bigot. He that dare not is a slave

Reason and justice tell me there's more love for humanity in electricity and steam than in chastity and vegetarianism