Author: Dennis Prager
If there is no God, the labels 'good' and 'evil' are merely opinions. They are substitutes for 'I like it' and 'I don't like it.' They are not objective realities.
Goodness is about character - integrity, honesty, kindness, generosity, moral courage, and the like. More than anything else, it is about how we treat other people.
The biggest obstacle to people becoming better is that you have to really want to be a good person in order to be a better person, and most people would rather be other things.
Of all the characteristics needed for both a happy and morally decent life, none surpasses gratitude. Grateful people are happier, and grateful people are more morally decent.