You don't live in a world all alone. Your brothers are here too.

My life is full of meaning to me. The life around me must be full of significance to itself. If I am to expect others to respect my life, then I must respect the other life I see.

Compassion, in which all ethics must take root, can only attain its full breadth and depth if it embraces all living creatures and does not limit itself to mankind.

For animals that are overworked, underfed, and cruelly treated; for all wistful creatures in captivity that beat their wings against bars; for any that are hunted or lost or deserted or frightened or hungry; for all that must be put to death...and for those who deal with them we ask a heart of compassion and gentle hands and kindly words.

Does my behavior in respect of love affect nothing? That is because there is not enough love in me.

Open your eyes and look for some man, or some work for the sake of men, which needs a little time, a little friendship, a little sympathy, a little sociability, a little human toil....It is needed in every nook and corner. Therefore search and see if there is not some place where you may invest your humanity.

Ethics is nothing else than reverence for life.