"Scientific theories need reconstruction every now and then. If they didn't need reconstruction they would be facts, not theories."

“In a mathematical sense, space is manifoldness, or combination of numbers. Physical space is known as the 3-dimension system. There is the 4-dimension system, there is the 10-dimension system.”

“In this country all a man need to do is to attain a little eminence and immediately he begins to talk. … But the American people are willing to listen to any one who has attained prominence. The main fact is that we've heard a man's name a great many times; that makes us ready to accept whatever he says.”

“When it comes to scientific matters the ready talkers simply run riot. There are a lot of pseudo-scientists who with a little technical jargon to spatter through their talk are always getting in the limelight by making startling predictions of what the future has in store, using as their text the most recent discovery or invention.”

“There are no foolish questions and no man becomes a fool until he has stopped asking questions.”

“We don't know the why of anything. On that matter we are no further advanced than was the cavedweller. The scientist is contented if he can contribute something toward the knowledge of what is and how it is.”