It is the stars,
The stars above us, govern our conditions.

– William Shakespeare

King Lear, Act 4, Scene 3. This is part of the fuller passage: "It is the stars, The stars above us, govern our conditions. Else one self mate and mate could not beget Such different issues." Kent is saying that it is the stars above us decide our fates, otherwise one couple couldn’t have children so different from each other as Cordelia and her two sisters.