What is good and what is evil? Do these two 'forces' exist at all, or are they simply concepts dependent upon the subjective experiences of man? What is good for one may not be good for another, and the opposite is true for evil. How then do we identify and express the specific and distinguishing qualities between the two?
Many people today suggest that good and evil are mutually interdependent -- that you can't have one without the other, that you can't know what one is without the other. This is essentially the position that there is no such thing as good or evil, that it's all a matter of perspective.
This position is fatuous in the extreme. Try making this case to mothers who give birth in North Korean concentration camps whose newborn infants are used, while still alive, as soccer balls by the camp guards, or to the relatives of the six million Jews killed by Hitler in WW2. Try making it to the millions slaughtered by Stalin and Mao.
Most people who live in the real world, rather than in the ivory towers of cyberspace, know that good and evil exist and are different from one another. This fact is so obvious to most of us that when people pretend it isn't so one has to wonder how much effort it took for them to embrace such denial and, even more important, what their motivation could possibly have been. As to this latter question, I have some idea.
If there is such a thing as good that exists independently from evil, then that becomes an absolute, a standard; and the existence of a standard necessarily implies personal responsibility -- and that is the last thing that our culture of perpetual adolescence wants to acknowledge. Furthermore, it is but a short distance to the idea of divinity, not measuring up, guilt, shame and consequences, none of which are any more attractive to free-wheeling self-gratification than is the notion of personal responsibility. Why not avoid it all by denying the existence of absolutes from the get-go? Then everyone can do whatever they want and no one can legitimately criticize.
Except the real world doesn't work that way, and sooner or later the people who embrace this silliness are going to find it out. You can't deny reality forever; eventually, it comes crashing down on you whether you "believe" in it or not.
It should be obvious from my self-description that I am not a member of an Abrahamic religion. I don't believe in hell or eternal damnation. I do, however, believe in good and evil, which are as obviously real and distinct to me as these facts are to most of the rest of humanity. What are they? The answer is surprisingly simple.
If you start with the assumption that life has meaning, then that means your life has a purpose. "Good" can be thought of as describing actions that further that purpose, while "evil" can be thought of as describing actions that frustrate that purpose. Note that this is based, not upon what you want your purpose to be, but what it actually is -- your "true" purpose, if you will. Most of us have only a dim idea of that, if we have one at all. Many of the world's religions are based on notions of that purpose, and how to fulfill it, as they have come to various prophets, seers and wise men throughout history. More than one has characterized that purpose broadly as "Love," which is the one I also subscribe to.
But, however you characterize it, good and evil can be understood in terms of their furtherance and frustration, respectively, of your purpose in life. Or, as the previous poster said:
The universe began with a bang, clock's been ticking; so there's your fundamental reality. Positive, forward direction - good. Then there's negative, backward direction - evil. ... There is no balance of opposites...