If I am not for myself, then who will be for me? But when I am for myself, then what am "I"? And if not now, when?
Judge not thy friend until thou standest in his place.
Who does not grow, declines.
A single candle can light a thousand more without diminishing itself.
What you yourself hate, don't do to your neighbor. This is the whole law; the rest is commentary. Go and study.
Be of the disciples of Aaron, loving peace and pursuing peace, loving your fellow creatures and drawing them near to the Law.