Full Idea
One group drags everything down to earth, insisting that only what offers tangible contact is, since they define being as the same as body, despising anyone who says that something without a body is. These are frightening men.
Gist of Idea
Some alarming thinkers think that only things which you can touch exist
Source
Plato (The Sophist [c.359 BCE], 246b)
Book Reference
Plato: 'The Sophist', ed/tr. Bernadete,Seth [University of Chicago 1986], p.39
A Reaction
Intellectually speaking, Plato seems to have been rather timid. Dualism, and its world of ideas, seemed obvious to him, but physicalism is clearly more plausible in the age of neuroscience (even if it is still rejected).