“Truth does not become more true by virtue of the fact that the entire world agrees with it, nor less so even if the whole world disagrees with it.”

“You must accept the truth from whatever source it comes.”

“Your purpose...should always be to know...the whole that was intended to be known.”

“The person who wishes to attain human perfection should study logic first, next mathematics, then physics, and, lastly, metaphysics.”

“You should recognize that mans soul, this single entity whose powers and parts we have described, may be compared to matter, and that the power of reasoning is its completed form. As long as the so...”

“For the elements have the property of moving back to their place in a straight line, but they have no properties which would cause them to remain where they are, or to move other-wise than in a str...”

“The fool doth think he is wise, but the wise man knows himself to be a fool.”

“The secret of life, though, is to fall seven times and to get up eight times.”

“It is the mark of an educated mind to be able to entertain a thought without accepting it.”

“The truth." Dumbledore sighed. "It is a beautiful and terrible thing, and should therefore be treated with great caution.”

“The truth is rarely pure and never simple.”

“Never tell the truth to people who are not worthy of it.”

“When man will return to nature, nature will return to him.”

“The sky is an enormous man.”

“When the full-grown poet came,Out spake pleased Nature (the round impassive globe, with all its shows of day and night,) saying, He is mine;But out spake too the Soul of man, proud, jealous and unr...”