 And Philo read "Cursed is he who causes the blind man to wander in the road," also to speak of pleasure.Philo taught that impious pleasure caused the blind to wander, for the outward sense, devoid of reason, is blinded by nature, and the eyes of its reason are put out.Philo taught that it is by reason alone that we attain a true comprehension of things, and not by the outward senses.