Avicenna

"Knowledge is power."

"The human body is like a machine, and the mind is its engine."

"Healing is a matter of time, but it is sometimes also a matter of opportunity."

"The proof of truth is that it can endure."

"The human being is a microcosm of the universe."

"Whoever is not contented with little, will not be contented with much."

"The greatest wealth is health."

"Courage is the most important virtue, for it guarantees all the others."

"A person's worth is determined not by what they possess, but by their character."

"The soul is immortal and eternal."

"Good health requires good knowledge."

"True knowledge comes from understanding the nature of things."

"Time is the measure of existence and change."

"The goal of every intelligent being is happiness."

"Music is a mathematical art whose proportions may be expressed in numbers."

"A man is not truly free until he controls his own mind."

"The heart must be purified before the mind can receive wisdom."

"Science is organized knowledge."

"Peace comes not from the absence of conflict, but from the ability to overcome it."

"The tongue is the smallest organ in the body, yet it can accomplish the greatest deeds."

"Patience is the companion of wisdom."

"The pursuit of knowledge is a journey without end."

"A friend is one with whom you dare to be yourself."

"Beauty is the harmony of all the parts."

"The art of medicine depends on three factors: the patient, the physician, and the disease."

"Greed is the root of all evil."

"The intellect is the noblest part of man."

"To understand is to forgive."

"The purpose of life is to perfect the soul."

"Fear is the enemy of progress."