Bythree methods we may learn wisdom: first, by reflection, which is noblest;second, imitation, which is easiest; and third by experience, which is thebitterest.
The reasonable man adapts himself to the world; the unreasonable one persists in trying to adapt the world to himself. Therefore, all progress depends upon the unreasonable man.
Themost dramatic conflicts are perhaps, those that take place not between menbut between a man and himselfwhere the arena of conflict is a solitary mind.