Excellence in any craft requires both knowledge and practice... - Avicenna

"Excellence in any craft requires both knowledge and practice united in purpose."

Avicenna Work

Philosopher-Physician Persian 980–1037

More from 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."

"Hard work never killed anybody."

"Work with purpose and integrity."

"Hard work pays off in the end."

"A man's gotta do what a man's gotta do."