Complete non-violence is complete absence of ill-will against all that lives. It therefore embraces even sub-human life, not excluding noxious insects and beasts. They have not been created to feed our destructive propensities. If we only knew the mind of the Creator, we should find their proper place in His creation.
'Thou shalt not kill' does not apply to murder of one's own kind only, but to all living beings and this commandment was inscribed in the human breast long before it was proclaimed from Sinai.
From a philosophical perspective, I want to fight off isolationism and protectionism, be it part of another voice out there that says, wait a minute, what matters to women in Afghanistan matters to America. An isolationist point of view says it doesn't matter. The articulation of "all life matters" helps frame the case that it does matter what happens to a woman in Afghanistan.
Socrates.- If all goes well, the time will come when one will take up the memorabilia of Socrates rather than the Bible as a guide to morals and reason... The pathways of the most various philosophical modes of life lead back to him... Socrates excels the founder of Christianity in being able to be serious cheerfully and in possessing that wisdom full of roguishness that constitutes the finest state of the human soul. And he also possessed the finer intellect.