“I have never met a man so ignorant that I couldn't learn something from him.”

“See now the power of truth; the same experiment which at first glance seemed to show one thing, when more carefully examined, assures us of the contrary.”

“I do not feel obliged to believe that the same God who has endowed us with sense, reason, and intellect has intended us to forgo their use.”

“By denying scientific principles, one may maintain any paradox.”

“It is a beautiful and delightful sight to behold the body of the Moon.”

“Where the senses fail us, reason must step in.”

“It is easier to write a book with footnotes than the same book written so that children can understand it.”

“I never teach my pupils, I only attempt to provide the conditions in which they can learn.”

“Ive come to a frightening conclusion that I am the decisive element in the classroom. Its my personal approach that creates the climate. Its my daily mood that makes the weather. As a teacher, I po...”

“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.”