Who said "Life is either a daring adventure or nothing at all."?

This quote is attributed to Leonhard Euler.

Life is either a daring adventure or nothing at all. - Leonhard Euler

"Life is either a daring adventure or nothing at all."

Leonhard Euler Adventure

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."

"The greatest adventure is life itself."

"The adventure of life begins with a single step."

"Adventure finds you when you stop running."

"Fortune and glory, kid."