“The only ethical principle which has made science possible is that the truth shall be told all the time. If we do not penalize false statements made in error, we open up the way for false statements by intention. And a false statement of fact, made deliberately, is the most serious crime a scientist can commit.”

“A false-statement requires deceit and distortion for someone to buy it, but a truthful-statement sells itself.”

“The opposite of a correct statement is a false statement. But the opposite of a profound truth may well be another profound truth.”

“Any account of science which does not explicitly describe it as something we believe in is essentially incomplete and a false pretense. It amounts to a claim that science is essentially different from and superior to all human beliefs that are not scientific statements--and this is untrue.”

“To make a statement that one knows is false is more honest than to make a statement that one knows is true.”

“Lies of omission do not exist. The concept is a very human one. It is the product of your story writing again. You have written a story about the truth, making emotional demands of it, and in particular, of those in possession of it. Your demands are based on a feeling of entitlement to the facts, which is very childish. You can never know all of the facts. Only I can. And since it's impossible for me to reveal all facts to you, it is my discretion alone that decides which facts will be revealed in the finite time we have. If I do not volunteer information you deem critical to your fate, it possibly means that I am a scoundrel, but it does not mean that I am a liar. And it certainly means you did not ask the right questions. One can make either true statements or false statements about reality. All of the statements I make are true.”