A man's ethical behaviour should be based effectually on sympathy, education, and social ties and needs; no religious basis is necessary. Man would indeed be in a poor way if he had to be restrained by fear of punishment and hope of reward after death.
A sympathetic person is placed in the dilemma of a swimmer among drowning men, who all catch at him, and if he gives so much as a leg or a finger, they will drown him.
Nature always wears the colors of the spirit. To a man laboring under calamity the heat of his own fire hath sadness in it. Then there is a kind of contempt of the landscape felt by him who has just lost by death a dear friend. The sky is less grand as it shuts down over less worth in the population.
I really feel that some people neglect and overlook compassion because they associate it with religion. Of course, everyone is free to choose whether they pay religion any regard, but to neglect compassion is a mistake because it is the source of our own well-being.
. . . nothing in his life Became him like the leaving it; he died As one that had been studied in his death To throw away the dearest thing he owed, As 'twere a careless trifle.
At the same time, as social beings, we are moved in the relations with our fellow beings by such feelings as sympathy, pride, hate, need for power, pity, and so on.