“You can only find truth with logic if you have already found truth without it.”

“Great truths can only be forgotten and can never be falsified.”

“Truth can understand error, but error cannot understand truth.”

“I? What am I?" roared the President, and he rose slowly to an incredible height, like some enormous wave about to arch above them and break. "You want to know what I am, do you? Bull, you are a man of science. Grub in the roots of those trees and find out the truth about them. Syme, you are a poet. Stare at those morning clouds. But I tell you this, that you will have found out the truth of the last tree and the top-most cloud before the truth about me. You will understand the sea, and I shall be still a riddle; you shall know what the stars are, and not know what I am. Since the beginning of the world all men have hunted me like a wolf—kings and sages, and poets and lawgivers, all the churches, and all the philosophies. But I have never been caught yet, and the skies will fall in the time I turn to bay. I have given them a good run for their money, and I will now.”

“it will be generally found that the popular joke is not true to the letter, but is true to the spirit. The joke is generally in the oddest way the truth and yet not the fact.”

“There are degrees of seriousness," replied Syme. "I have never doubted that you were perfectly sincere in this sense, that you thought what you said well worth saying, that you thought a paradox might wake men up to a neglected truth.”

“There is no such thing as education. The thing is merely a loose phrase for the passing on to others of whatever truth or virtue we happen to have ourselves. It is typical of our time that the more doubtful we are about the value of philosophy, the more certain we are about the value of education. That is to say, the more doubtful we are about whether we have any truth, the more certain we are (apparently) that we can teach it to our children.”