Tyki said
the opposite of wood is fire, electricity is earth, and stone would be lava. diamond is under the crystal element which has the same opposites as stone, and psychic energy is the opposite of the corpus element, the opposite of love is hate (both of which are a pain in the ass to make) and ice also represents cold. also, this doesn't make you tired like normal, it expends mental energies to remember the arcanum and bring them into being. other than that you can do what ever and not expend much energy :P
Wood is flammable, but that doesn't make fire it's opposite. by that logic, fire is the opposite of every flammable material, and believe me, there are a LOT of flammable materials, which would be just plain silly. Fire can also melt matter, which would make it the opposite of all matter. That's complete bullshit.
Earth is a confuctor for electricity. All mattter contains electricity within itself in the form of electrons. How can Earth be the opposite of electricity? It isn't even the greatest isolator. That one's straight from magicka, and while I can see where that belief comes from (the grounding of electricity) it's not valid.
Corpus? You mean a corpse? How is that the opposite of psychic energy?....... I don't even get this one.
Actually, hate is caused by love, and love is caused by hate. Both psychological research and practical research shows us that the two emotions are intrinsically linked, and cause one another. While this was the obvious choice, love is a unique psychological state of mind based on an overdrive of many other mental states. Hate is, more accurately, another form of Love, both of which are a form of obsession.
Creating matter or energy requires the use of energy. This is a basic law of magic. Unless you can explain how this works, you're still going to be using energy. And remembering things doesn't expend mental energy, that's bullshit.