"The constrained performance of bodily labour does, it is true, exert no evil influence on the body; but in the case of the mind, no study, pursued under compulsion, remains rooted in the memory."

"Our love for our children springs from the soul's greatest yearning for immortality."

"Science is nothing but perception."

"The true lover of knowledge naturally strives for truth, and is not content with common opinion, but soars with undimmed and unwearied passion till he grasps the essential nature of things."

"The learning and knowledge that we have, is, at the most, but little compared with that of which we are ignorant."

"All who do evil and dishonorable things do them against their will."

"At the touch of love, Everyone becomes a poet."

"The direction in which education starts a man will determine his future life."

"It is only just that anything that up on its own should feel it has nothing to repay for an upbringing which it owes no one."

"Lust is inseparably accompanied with the troubling of all order, with impudence, unseemliness, sloth, and dissoluteness."