Not all elves all elves manifest Abilities, and some end up Talentless. However every single elf has skills, which you don't manifest, only improve through Foxfire P.E. or Exillium training. Skills include telekinesis, outward channeling, holding breath for long periods of time, night vision, levitation, and suppressing hunger for a long period of time.
Some elves see skills as useless, and really not all that important. However others see them as essential. Those same people say that elves are wasting potential that they have.