philosophy

Well, it depends on what YOU consider to be good and what you consider to be evil. Is knowledge necessarily good? Knowledge isn't always true; it can be misleading (and, in my opinion, conclusions drawn too hastily and based on incomplete data are especially harmful). And even truth, if you look at it more closely, isn't always good – just think of the well-worn phrase "a lie for the greater good."
You could say that good is happiness. But, again, is that really the case?