Wherever there is light, there is shadow; wherever there is length, there is shortness; wherever there is white, there is black. Just like these, as the self-nature of things can not exist alone, they are called non-substantial.
Gautama BuddhaI am, I am not, I will be, I will not be are vein thoughts which is a sickness and once all are eliminated no desire arises.
Gautama Buddha