Who said "The deepest truths are often the simplest."?

This quote is attributed to William Carlos Williams.

The deepest truths are often the simplest. - William Carlos Williams

"The deepest truths are often the simplest."

William Carlos Williams Truth

Poet Physician American 1883–1963

"So much depends upon a red wheel barrow glazed with rain water beside the white chickens."

"The pure products of America go crazy."

"No ideas but in things."

"I have discovered that most of the things I've done, I've done for the sake of their form."

"Lucy, you got some 'splainin' to do!"

"You must always be honest with the people you love."

"Truth always comes out in the end."

"Honesty is always the best policy."