Who said "Time spent in meaningful work is never wasted."?

This quote is attributed to Friedrich Schiller.

Time spent in meaningful work is never wasted. - Friedrich Schiller

"Time spent in meaningful work is never wasted."

Friedrich Schiller Work

Philosopher Poet Playwright German 1759–1805

"He who has made a fair compact with poverty is rich."

"Against stupidity the gods themselves contend in vain."

"The true art of the commander is to take as much rest and leisure as possible."

"Life is only worth living if we have someone to live for."

"Hard work never killed anybody."

"Work with purpose and integrity."

"Hard work pays off in the end."

"A man's gotta do what a man's gotta do."