Bailey.

He who will not reason is a bigot; he who cannot is a fool; he who dares not is a slave.

Byron.

Reason is the glory of human nature, and one of the chief eminences whereby we are raised above the beasts in this lower world.

Watts.

Man is not the prince of creatures,

But in reason. Fail that, he is worse

Than horse, or dog, or beast of wilderness.

Field.

Man is a thinking being, whether he will or no. All he can do is to turn his thoughts the best way.