An eye for an eye only ends up making the whole world blind.
- Mohandas "Mahatma" Gandhi (1869- 1948)
This quote's themes are friendship and worldly matters.
"An eye for an eye" means paying back hatred with hatred. This means that if we hold grudges with everyone, the people of world will no longer be united.
Jesus said, "Do unto others as you would have them do to you." So we shouldn't take "an eye for an eye" but rather "forgive as your father in Heaven has forgiven you" and unite as a whole. Forgive and don't hold grudges, take care of everyone, whether you like them or not. You don't have to love every one, but treat them like they are human and with respect.