If I steal money from any person, there may be no harm done from the mere transfer of possession; he may not feel the loss, or it may prevent him from using the money badly. But I cannot help doing this great wrong towards Man, that I make myself dishonest.
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.
When an action is once done, it is right or wrong for ever; no accidental failure of its good or evil fruits can possibly alter that.
It is wrong always, everywhere, and for anyone, to believe anything upon insufficient evidence.
To sum up: it is wrong always, everywhere, and for anyone, to believe anything upon insufficient evidence.