Philosophies & Discipline Training
Your class designates one or more of of the philosophies you have trained in as Primary Philosophies. While you can learn any power you meet the prerequisites for, powers outside your primary philosophy(ies) are harder to use and cost more energy. To utilize powers outside your primary philosophy, increase the Energy cost (i.e. Stamina or Resolve) required to wield that power by 50% (round up, with a minimum increase of 1 Energy). See Non-Primary Philosophies for more details.
Within your primary philosophy(ies) you also have chosen disciplines. Powers outside your chosen disciplines also have a higher cost to use. To utilize powers outside your discipline, increase the energy cost required to wield that power by 50% (round up, with a minimum increase of 1 Energy).