Avicenna

"Happiness is the state of perfect health of body and mind."

"The wise person does not fear death but fears wasting life."

"Every action has a reason; every reason has a source."

"The greatest teacher is nature itself; observe and learn."

"To heal the body, one must first heal the mind."

"Knowledge without application is like a tree without fruit."

"The universe speaks to those who listen with their minds."

"Peace is not the absence of conflict but the mastery of it."

"A person of wisdom knows both what to do and what not to do."

"The pursuit of truth is the noblest of all pursuits."

"Memory is the treasure house of the mind."

"To understand love, one must understand sacrifice."

"The body is like an instrument; it must be tuned to produce harmony."

"Courage is not the absence of fear but action despite fear."

"The mind is infinite in its capacity to wonder and understand."

"To be healthy is to be free from the tyranny of the body."

"The essence of beauty lies in proportion and harmony."

"A true friend is a mirror in which you see your best self."

"The study of science is the study of creation."

"To change oneself is to change the world."

"The rational soul seeks truth as naturally as the eye seeks light."

"In every disease, there is a message; listen and understand it."

"The purpose of life is the perfection of the soul."

"To dream is to see with the eyes of the future."

"Knowledge is a plant that grows with constant nurturing."

"The heart knows many things the mind cannot understand."

"To lead is to serve those who follow."

"The greatest strength lies in knowing your weakness."

"Time is the measure of change; without change, time does not exist."

"Art is the expression of the soul through the hands of the craftsman."