The hand that rocks the cradle rules the world.
~ English Proverb, American [18483]

This proverb has inspired books, film, music and television. Here is Glen Campbell singing 'The Hand that Rocks the Cradle' with lyrics:

There is also a movie of the same name starring Rebecca De Mornay. It's not quite as positive and nurturing as the song but gives a broader understanding of the proverb:

More English Proverbs

More American Proverbs