"Hate the sin and not the sinner" is a precept which, though easy enough to understand, is rarely practiced, and that is why the poison of hatred spreads in the world.
Nonviolence is the basis of the search for truth. I am realizing every day that the search is vain unless it is founded on nonviolence as the basis. It is quite proper to resist and attack a system, but to resist and attack its author is tantamount to resisting and attacking oneself. For we are all tarred with the same brush, and are children of one and the same Creator, and as such the divine powers within us are infinite. To slight a single human being is to slight those divine powers, and thus to harm not only that person but the whole world.
— Mahatma Gandhi, Mohandas Gandhi: Essential Writings by Mahatma Gandhi, John Dear, editor