Who said "Knowledge of self is the beginning of all wisdom."?

This quote is attributed to Leonidas I.

Knowledge of self is the beginning of all wisdom. - Leonidas I

"Knowledge of self is the beginning of all wisdom."

Leonidas I Knowledge

King Warrior Ancient Greece 540–480

"This is Sparta!"

"Spartans! Tonight we dine in hell!"

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"Freedom isn't free, it requires sacrifice and courage."

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

"The mind is humanity's greatest tool."

"A tidy room reflects a tidy mind."

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