Trousers should shiver on the shoe but not break. —Arnold Bennett’s tailor

A gentleman: superficially perhaps, a man who never looks as if he’d just had his hair cut.

No gentleman can be without three copies of a book; one for show (and this he will probably keep at his country house), another for use, and a third at the service of his friends. —Richard Heber

Some great examples from Geoffrey Madan's notebooks