Who said "To know oneself is the first step toward greatness."?

This quote is attributed to Skanderbeg.

To know oneself is the first step toward greatness. - Skanderbeg

"To know oneself is the first step toward greatness."

Skanderbeg Knowledge

Military Commander Albanian 1405–1468

"I am the son of my efforts."

"A man without courage is not a man."

"Freedom is the greatest treasure."

"I fight not for gold, but for my people."

"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."