"Anarchism is the purity of rebellion. A pig who struggles wildly and rends the air with his cries while he is held to be slaughtered, and a baby who kicks and screams when, wanting warmth and his mother's breast, he is made to wait in the cold—these are two samples of natural rebellion. Natural rebellion always inspires either deep sympathy and identification with the rebelling creature, or a stiffening of the heart and an activation of aggressive-defensive mechanisms to silence an accusing truth. This truth is that each living being is an end in itself; that nothing gives a being the right to make another a mere instrument of his purposes."