When a man is guided by the principles of reciprocity and consciousness, he is not far from the moral law. Whatever you don't wish for yourself don't do unto others.
Not to converse with a man worthy of conversation is to waste the man. To converse with a man not worthy of conversation is to waste words. The wise waste neither men nor words.
Love others as you would love yourself, judge others as you would judge yourself, cherish others as you would cherish yourself. When you wish for others as you wish for yourself and when you protect others as you would protect yourself, that's when you can say it's true love.
The Master said, If out of the three hundred songs I had to take one phrase to cover all my teachings, I would say 'Let there be no evil in your thoughts.'