Heresies are experiments in man's unsatisfied search for truth.

The conscience of the world is so guilty that it always assumes that people who investigate heresies must be heretics just as if a doctor who studies leprosy must be a leper. Indeed it is only recently that science has been allowed to study anything without reproach.

In politics as in religion it is equally absurd to aim at making proselytes by fire and sword. Heresies in either can rarely be cured by persecution.

History warns us that it is the customary fate of new truths to begin as heresies and to end as superstitions.