Who said "In diversity there is depth; in unity, there is power."?

This quote is attributed to John Milton.

In diversity there is depth; in unity, there is power. - John Milton

"In diversity there is depth; in unity, there is power."

John Milton

Poet English 1608–1674

"The mind is its own place, and in itself can make a heaven of hell, a hell of heaven."

"Better to reign in Hell than serve in Heaven."

"All is not lost; the unconquerable Will, and study of revenge, immortal hate, and courage never to submit or yield."

"What is strength without a double share of wisdom?"