Abstract

The extraordinary experiments of Nambu-Goldstone "boson"; the Leibniz's concept of "monad"; the aristotelian-thomistic concept of "essence" (nature): three descriptions of reality which can converge. Three results of the scientific research and philosophical thought distant over time, language and cultural context, but complementary to each other. We can compare these for a more appropriate understanding of reality. In 21th century, Physics and Philosophy can work together: Physics provides new meanings to philosophical words; Philosophy provides new perspectives through which investigate the reality.