Full Idea
The study of grammar, in my opinion, is capable of throwing far more light on philosophical questions than is commonly supposed by philosophers.
Gist of Idea
The study of grammar is underestimated in philosophy
Source
Bertrand Russell (The Principles of Mathematics [1903], §046)
Book Reference
Russell,Bertrand: 'Principles of Mathematics' [Routledge 1992], p.42
A Reaction
This is a dangerous tendency, which has led to some daft linguistic philosophy, but Russell himself was never guilty of losing the correct perspective on the matter.