Full Idea
Numbers are nothing but a verbal convenience, and disappear when the propositions that seem to contain them are fully written out.
Gist of Idea
Numbers are just verbal conveniences, which can be analysed away
Source
Bertrand Russell (Is Mathematics purely Linguistic? [1952], p.301)
Book Reference
Russell,Bertrand: 'Essays in Analysis', ed/tr. Lackey,Douglas [George Braziller 1973], p.301
A Reaction
This is the culmination of the process which began with his 1905 theory of definite descriptions. The intervening step was Wittgenstein's purely formal account of the logical connectives.