Observers of nature, although they may think differently, will still agree that everything that is, everything that is observable as a phenomenon, can only exhibit itself in one of two ways. It is either a primal polarity that is able to unify, or it is a primal unity that is able to divide. The operation of nature consists of splitting the unified or uniting the divided; this is the external movement of systole and diastole of the heartbeat, the inhalation and exhalation of the world in which we live, act, and exist.
Goethe - Doctrine of Colour
And one can't exist without the other🌐