Who said "The mind is capable of anything you believe it can do."?

This quote is attributed to Dick Van Dyke.

The mind is capable of anything you believe it can do. - Dick Van Dyke

"The mind is capable of anything you believe it can do."

Dick Van Dyke Strength

Comedian Actor American Born 1925 (age 101)

"I'd rather be a big fish in a small pond than a small fish in a big pond."

"The beauty of life is in the details."

"Laughter is the best medicine."

"Life is what you make it."

"Strength comes from within."

"A woman should be proud of who she is."

"A strong woman can overcome anything."

"The only thing I'm good at is killing."