I am seeking a philosophical perspective that argues that all things, invariably, have both positive and negative aspects. Put otherwise, I am seeking a "Zebra Philosophy", so to speak, that saya that there is "black" and there is "white" to everything, rather than shades of gray. Accordingly, one is to identify the negative and reduce it, and the positive and enhance it, but not confuse the two. Is there such a "referenceable" philosophical perspective?
Thanks