One unerring mark of the love of truth is not entertaining any proposition with greater assurance than the proofs it is built upon will warrant.

Certainly great persons had need to borrow other men's opinions to think themselves happy; for if they judge by their own feeling, they cannot find it: but if they think with themselves what other men think of them, and that other men would fain be as they are, then they are happy as it were by report, when, perhaps, they find the contrary within.

It is practice alone that brings the powers of the mind, as well as those of the body, to their perfection.

Practice conquers the habit of doing, without reflecting on the rule.

It is vain to find fault with those arts of deceiving wherein men find pleasure to be deceived.

To give a man full knowledge of morality, I would send him to no other book than the New Testament.

The dread of evil is a much more forcible principle of human actions than the prospect of good.