Who said "To know oneself is the beginning of all true knowledge."?

This quote is attributed to Geoffrey Chaucer.

To know oneself is the beginning of all true knowledge. - Geoffrey Chaucer

"To know oneself is the beginning of all true knowledge."

Geoffrey Chaucer Knowledge

Poet Writer English 1343–1400

"The greatest virtue is to speak the truth and operate with honor."

"Love is the greatest thing that God has bestowed upon mankind."

"Time and tide wait for no man."

"Knowledge is power."

"We're not just after treasure. We're preserving history."

"The mind is humanity's greatest tool."

"A tidy room reflects a tidy mind."

"You can learn a lot about a person by how they keep their space."