Do not be afraid of enthusiasm. You need it. You can do nothing effectively without it.

The man who is fond of complaining likes to remain amid the objects of his vexation. He will most strongly revolt against every means proposed for his deliverance. This is what suits him. He asks nothing better than to sigh over his position and to remain in it.

The effect of great and inevitable misfortune is to elevate those souls which it does not deprive of all virtue.

Nothing falsifies history more than logic.

If I had not smoked I should have been dead ten years ago.