as a student of world religions, almost universally it is
you come to understand that you are one with every other thing in the world. so all the hatred you send out, you are actually taking in: same with love.
And that there is no death, no life, only energy in different forms.
ive heard it explained as like looking at the ocean from a boat. the unenlightened see the water, whereas the enlightened see under the water at all the life.