Energeticism

Energeticism is the ontology, or philosophy of being, which holds that all things are ultimately composed of energy. It is opposed to ontological materialism and idealism. Energeticism might be associated with the physicist and philosopher Ernst Mach, though his attitude to it is ambiguous. It is a theory that is largely rejected now, due to its Aristotelian metaphysical leanings, and due to its rejection of the existence of a micro-world (such as the one that chemists or physicists have discovered).