“Man has much power of discourse which for the most part is vain and false; animals have but little, but it is useful and true, and a small truth is better than a great lie.”

“Don't forget that few people are likely to tell more than a small part of the truth: no one tells much of the truth, let alone the whole truth. Spoken words are facts in themselves, whether true or false. When people talk they reveal themselves, whether they're lying or telling the truth.”

“A harmful truth is better than a useful lie.”

“Every decent con man knows that the simplest truth is more powerful than even the most elaborate lie.”

“Which is better, truth that is a lie or the lie that is truth?”

“An unbelieved truth can hurt a man much more than a lie. It takes great courage to back truth unacceptable to our times. There's a punishment for it, and it's usually crucifixion.”

“The traitor to humanity is the traitor most accursed;
Man is more than Constitutions; better rot beneath the sod,
Than to be true to Church and State while we are doubly false to God!”

“As Attraction is stronger in small Magnets than in great ones in proportion to their Bulk, and Gravity is greater in the Surfaces of small Planets than in those of great ones in proportion to their bulk, and small Bodies are agitated much more by electric attraction than great ones; so the smallness of the Rays of Light may contribute very much to the power of the Agent by which they are refracted.”

“It would be better for us to have some doubts in an honest pursuit of truth, than it would be for us to be certain about something that was not true.”

“Truths … are too often considered as so true, that they lose all the power of truth, and lie bed-ridden in the dormitory of the soul, side by side with the most despised and exploded errors.”