Who said "The mind must be trained as rigorously as the body."?

This quote is attributed to Maimonides.

The mind must be trained as rigorously as the body. - Maimonides

"The mind must be trained as rigorously as the body."

Maimonides Work

Philosopher-Theologian Andalusian-Jewish 1138–1204

"The risk of a wrong decision is preferable to the terror of indecision."

"Silence is the fence around wisdom."

"Know that according to the judgment of all wise men, there are two things in the universe that cannot be doubted."

"A person is obligated to bless the bad just as he blesses the good."

"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."