"Nothing in Excess." The second motto of the Temple of Delphi.
And for me, the third key to bring about peace, joy and harmony into my life is
The Golden Rule. . . . which dates back to ancient times and encompasses a wide range of world cultures and religions.
The ancient GREEK meaning of the Golden Rule:
"What thou avoidest suffering thyself seek not to impose on others." Epictetus
"It is impossible to live a pleasant life without living wisely and well and justly (agreeing 'neither to harm nor be harmed'), and it is impossible to live wisely and well and justly without living a pleasant life." Epicurus
Other translations of the Golden Rule" are:
Buddhism"Putting oneself in the place of another, one should not kill nor cause another to kill."
"One who, while himself seeking happiness, oppresses with violence other beings who also desire happiness, will not attain happiness hereafter."
Baha'i Faith"Ascribe not to any soul that which thou wouldst not have ascribed to thee, and say not that which thou doest not."
"Blessed is he who preferreth his brother before himself."
Christianity"Love your neighbor as yourself."
"Do to no one what you yourself dislike." ("Do unto others as you would have done unto you.")
Confucianism"Never impose on others what you would not choose for yourself."
Taoism"Regard your neighbor's gain as your own gain, and your neighbor's loss as your own loss."
"The sage has no interest of his own, but takes the interests of the people as his own. He is kind to the kind; he is also kind to the unkind: for Virtue is kind. He is faithful to the faithful; he is also faithful to the unfaithful: for Virtue is faithful."
"One should never do that to another which one regards as injurious to one’s own self. This, in brief, is the rule of dharma. Other behavior is due to selfish desires."
Judaism"That which is hateful to you, do not do to your fellow. That is the whole Torah; the rest is the explanation; go and learn."
"Thou shalt not take vengeance, nor bear any grudge against the children of thy people, but thou shalt love thy neighbour as thyself: I am the LORD."
“That which you want for yourself, seek for mankind.”
“None of you [truly] believes until he wishes for his brother what he wishes for himself.”
Jainism"Just as pain is not agreeable to you, it is so with others. Knowing this principle of equality treat other with respect and compassion."
GOD BLESS YOU ALL AND MAY THIS NEW YEAR BRING US CLOSER TO OUR ORIGINAL SELVES . . . OUR TRUE SELVES. MAY WE FIND OUR MEANING WITHIN. AND MAY WE ALL ASPIRE TO LIVE BY THE THREE KEYS TO PEACE, JOY AND HARMONY.