"Most persons are so absorbed in the contemplation of the outside world that they are wholly oblivious to what is passing on within themselves. The premature death of millions is primarily traceable to…"

"Of all the frictional resistances, the one that most retards human movement is ignorance, what Buddha called 'the greatest evil in the world.'"

"To know each other we must reach beyond the sphere of our sense perceptions."

"Our senses enable us to perceive only a minute portion of the outside world."

"The history of science shows that theories are perishable. Every truth that has been discovered was first ridiculed, then violently opposed, then accepted as self-evident."