Who said "In mathematics, every answer leads to ten new questions."?

This quote is attributed to Leonhard Euler.

In mathematics, every answer leads to ten new questions. - Leonhard Euler

"In mathematics, every answer leads to ten new questions."

Leonhard Euler

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."