The Golden Rule

Buddhism:

Hurt not others with that which pains yourself.

Christianity:

Always treat others as you would like them to treat you: that is the Law…

Hinduism:

This is the sum of all true righteousness – Treat others, as thou wouldst thyself be treated.

Islam:

Do unto all men as you would wish to have done unto you; and reject for others what you would reject for yourselves.

Judaism:

What is hurtful to yourself do not to your fellow man. That is the whole of the Torah and the remainder is but commentary.