I often had no scruples about deceiving nitwits and scoundrels and fools when I found it necessary. ...We avenge intelligence when we deceive a fool, and... deceiving a fool is an exploit worthy of an intelligent man. What has infused my very blood with an unconquerable hatred of the whole tribe of fools from the day of my birth is that I become a fool myself when I am in their company.
Giacomo CasanovaAs for myself, I always willingly acknowledge my own self as the principal cause of every good and of every evil which may befall me; therefore, I have always found myself capable of being my own pupil, and ready to love my teacher.
Giacomo Casanova