Who said "The elegance of a proof is the mark of a beautiful mind."?

This quote is attributed to Leonhard Euler.

The elegance of a proof is the mark of a beautiful mind. - Leonhard Euler

"The elegance of a proof is the mark of a beautiful mind."

Leonhard Euler Beauty

Mathematician Swiss 1707–1783

"Read Euler, read Euler, he is the master of us all."

"The beauty of a mathematical proof lies not in its length but in its elegance."

"Life is but a moment, yet mathematics is eternal."

"In mathematics, you don't understand things. You just get used to them."

"Beauty comes in many forms."

"Beauty comes from within."

"True beauty lies in authenticity."

"Beauty exists in the most unexpected places."