“Nothing is more damaging to a new truth than an old error.”

“A philosopher's renown is increased more by inventing a new error than by repeating a truth that has already been expressed by others.”

“To kill an error is as good a service as, and sometimes even better than, the establishing of a new truth or fact.”

“He who knows nothing is closer to the truth than he whose mind is filled with falsehoods and errors.”

“Nothing is more intolerable than to have admit to yourself your own errors.”

“The New Age movement is nothing more than the old rebellion against God and the belief in evolution, with a little Hindu and Buddhist religion mixed in with it.”

“There is nothing more ancient than the truth.”

“The history of human knowledge is nothing more than the realization that yesterday's pieties are actually shameful errors.”

“It is almost as difficult to make a man unlearn his errors as his knowledge. Mal-information is more hopeless than non-information; for error is always more busy than ignorance. Ignorance is a blank sheet, on which we may write; but error is a scribbled one, on which we must first erase. Ignorance is contented to stand still with her back to the truth; but error is more presumptuous, and proceeds in the same direction. Ignorance has no light, but error follows a false one. The consequence is, that error, when she retraces her footsteps, has further to go, before she can arrive at the truth, than ignorance.”

“There is nothing more corrosive to a democracy than the idea that there is no truth.”