Mental pleasures never cloy; unlike those of the body, they are increased by reputation, approved by reflection, and strengthened by enjoyment.

An act by which we make one friend and one enemy is a losing game; because revenge is a much stronger principle than gratitude

Doubt is the vestibule of faith.

Purity lives and derives its life solely from the Spirit of God.

Professors in every branch of the sciences, prefer their own theories to truth: the reason is that their theories are private property, but truth is common stock.

We are more inclined to hate one another for points on which we differ, than to love one another for points on which we agree. The reason perhaps is this: when we find others that agree with us, we seldom trouble ourselves to confirm that agreement; but when we chance on those who differ from us, we are zealous both to convince and to convert them. Our pride is hurt by the failure, and disappointed pride engenders hatred.

All adverse and depressing influences can be overcome, not by fighting, by by rising above them.