Who said "The cruelest prison is the one we build for ourselves."?

This quote is attributed to Julius Rosenthal.

The cruelest prison is the one we build for ourselves. - Julius Rosenthal

"The cruelest prison is the one we build for ourselves."

Julius Rosenthal Freedom

Banker & Philanthropist American 1862–1928

"Life is what happens while you are busy making other plans."

"The only way to do great work is to love what you do."

"In the middle of difficulty lies opportunity."

"Love is the bridge between two hearts."

"Freedom to pursue your passion is precious."

"Freedom comes at a cost."

"Order isn't restriction. It's freedom."

"Freedom comes with responsibility"