With few exceptions, our laws and religions are based on one thing -
The Golden Rule
Also known as the Ethic of Reciprocity, it asks that all of us be fair and just to everyone else, and that everyone else be fair and just to us.
It can be prescribed as a negative:
"Don't do to others what you don't want done to yourself."
or as a positive:
"Do unto others as you would have them do unto you."
Sometimes these are differentiated as The Silver Rule and The Golden Rule, respectively. There are philosophical grounds for the difference, but for me it's only a matter of the glass being half empty or half full. I like my glass half full.
This primitive and fundamental rule of humanity has been debated on principle. It is argued that I don't know what you would have done to yourself and you don't know what I would have done to myself. Also, it's argued that just because you like something, it doesn't mean I would like that same something too. But I would argue another way - the "glass half full" way.
It isn't the literal interpretation of this idea, but the spirit or intention of The Golden Rule that matters to humanity. It isn't necessarily the specific things in our lives to do, but the fact that we would consider doing; it's the consideration of others that matters in our lives. This is important - to have CONSIDERATION of others. The things for consideration change with location, culture, age, and many other human factors. But the fact that we have consideration is what we need to hold dear.
Empathy is the essence of The Golden Rule. It begs us to put ourselves in the place of another. It's good to receive the consideration of others, and it's imperative that we likewise do the same. The Golden Rule, when properly applied, perpetuates itself.
It may be true that we Deists don't have scripture or dogma, but I for one would suggest The Golden Rule as paramount in our religious philosophy, immediately following our belief in God.
I would do this in consideration of you.
One Deist Φ