A celibate clergy is an especially good idea, because it tends to suppress any hereditary propensity toward fanaticism. Carl Sagan
Every marriage tends to consist of an aristocrat and a peasant. Of a teacher and a learner. John Updike
If one does not understand a person, one tends to regard him as a fool. Carl Jung
Power tends to corrupt; absolute power corrupts absolutely. English Proverb
He who is anxious to secure the best tends to get stuck with the worst of the rest. Mexican Proverb
To be good tends to give absence later on. English Proverb