This is from the Dalai lama:
The universe we inhabit can be understood in terms of a living organism in which each cell works in balanced co-operation with every other cell to sustain the whole. If just one of these cells is harmed, as it is when disease strikes, that balance is harmed and there is danger to the whole.
This in turn suggests that our individual well-being is intimately connected both with that of all others and with the environment within which we live.
It also becomes apparent that our every action, our every deed, word and thought, no matter how slight or inconsequential it may seem, has an implication not only for ourselves but all others too.

 This is from Rabbi Abraham Joshua Heschel
A religious man is a person who holds God and man in one thought at one time, at all times,
who suffers harm done to others,
whose greatest passion is compassion,
whose greatest strength is love and defiance of despair.