Full Idea
We must regard matter as a logical construction.
Gist of Idea
Matter is a logical construction
Source
Bertrand Russell (The Ultimate Constituents of Matter [1915], p.132)
Book Reference
Russell,Bertrand: 'Mysticism and Logic' [Unwin 1989], p.132
A Reaction
A logical construction is a fancy way of saying a best explanation (but with Ockham's Razor hanging over it). A key component missing from Russell's account is that we can directly experience matter, because we are made of it.