What humans have spontaneously identified as good and bad - or as positive and negative - are evolutionary complementations in need of more accurate identifications. Buckminster Fuller
Everything has positive and negative consequences. Farrah Fawcett
This business can be very erratic and intense ... You can be the subject of great attention, both positive and negative. You really do have to tether yourself when you're a teen star. If you don't have that tether, then you're really lost. Claire Danes
For Aristotelian physics the membership of an object in a given class was of critical importance, because for Aristotle the class defined the essence or essential nature of the object, and thus determined its behavior in both positive and negative respects. Kurt Lewin
Electricity is of two kinds, positive and negative. The difference is, I presume, that one comes a little more expensive, but is more durable; the other is a cheaper thing, but the moths get into it. Stephen Leacock
The positive and negative poles of a battery create an electrical flow. The masculine and feminine poles between people create a flow of sexual energy in motion. David Deida