Meine Leiden sind das Werk der Natur, mein Glück aber ist mein Werk. Was man auch sagen mag, ich bin weise gewesen, denn ich bin glücklich gewesen, s… - Jean-Jacques Rousseau

Europe had fallen back into the barbarity of the first ages. People from this part of world, so enlightened today, lived a few centuries ago in a state worse than ignorance. Some sort of learned jargon much more despicable than ignorance had usurped the name of knowledge and set up an almost invincible obstacle in the way of its return. A revolution was necessary to bring men back to common sense, and it finally came from a quarter where one would least expect it. It was the stupid Muslim, the eternal blight on learning, who brought about its rebirth among us.

Those who distinguish civil from theological intolerance are, to my mind, mistaken

Teach by doing whenever you can, and only fall back upon words when doing is out of the question.