“Truth is eternal. Knowledge is changeable. It is disastrous to confuse them.”

“Experiment is the mother of knowledge.”

“For the things that are seen are temporal, but things that are unseen are eternal.”

“It's a very American trait, this wanting people to think well of us. It's a young want, and I am ashamed of it in myself. I am not always a good daughter, even though my lacks are in areas different from her complaints. Haven't I learned yet that the desire to be perfect is always disastrous and, at the least, loses me in the mire of false guilt?”

“Truth is what is true, and it's not necessarily factual. Truth and fact are not the same thing. Truth does not contradict or deny facts, but it goes through and beyond facts. This is something that it is very difficult for some people to understand. Truth can be dangerous.”

“We look not at the things which are what you would call seen, but at the things which are not seen. For the things which are seen are temporal. But the things that are not seen are eternal.”

“Like all great fantasists, he has taught me about life, life in eternity rather than chronology, life in that time in which we are real.”