““The elementary particles are often dubbed the atoms of our day. That may or may not be correct. It might be an acceptable metaphor for a particle that is hidden in its probability distribution; it is less so for the distribution itself. We have no notion whether or not elementary particles such as electrons or quarks are ultimately divisible. We also don't know whether they have any internal structure or we can continue to deal with them as though their entire charge and mass were concentrated in one point. But the probability of finding particles can always be subdivided. Once we include the probability distributions discussed above, these atoms of modern times differ from those of the atomists in antiquity by an absence of sharply defined limits that separate things being from things not being, matter from empty space.””
![“[T]he atoms or elementary particles themselves are not real; they form a world of potentialities or possibilities rather than one of things or facts.” quote by Werner Heisenberg](https://sms4smile.com/quotes/img-quotes/1ee/werner-heisenberg-4501_atoms_t-he-atoms-or-elementary-particles-thems_842631.jpg)
