“In like manner, if I let myself believe anything on insufficient evidence, there may be no great harm done by the mere belief; it may be true after all, or I may never have occasion to exhibit it in outward acts. But I cannot help doing this great wrong towards Man, that I make myself credulous. The danger to society is not merely that it should believe wrong things, though that is great enough; but that it should become credulous, and lose the habit of testing things and inquiring into them; for then it must sink back into savagery.”

“I have a great mind to believe in Christianity for the mere pleasure of fancying I may be damned.”

“Man often becomes what he believes himself to be. If I keep on saying to myself that I cannot do a certain thing, it is possible that I may end by really becoming incapable of doing it. On the contrary, if I have the belief that I can do it, I shall surely acquire the capacity to do it even if I may not have it at the beginning.”

“I try to make myself realize that I have learned the difference between right and wrong. That there is such a thing as right and wrong. But instead I've learned that these are things - this "right", this "wrong"- these are things that we are told. Simply told to believe. These are things we have not tested. And while most of the things we are told may be true, it is not until we have tested them, taunted them, flaunted them, that we truly know they are right. Or wrong. Or true. Or false. Or somewhere in-the-fucking-between. And I think I know now a little better which is which. And I also know I'll never quit testing this world. I'll never rely on common knowledge. Or common denominators. Or even common sense, for that matter.”

“In great contests each party claims to act in accordance with the will of God. Both may be, and one must be wrong. God cannot be for, and against the same thing at the same time.”

“The Duke would not pay for the works. He says that the Castle can never be taken. That is called hubris, Giacomo, the belief that you are never wrong. Believing you are never wrong is an error that afflicts great men. I have learned that to be right you must first be wrong many times. Without making errors--and learning from them--a man cannot find the truth.”