E. Cobham Brewer 18101897. Dictionary of Phrase and Fable. 1898.
Follow.
Follow your nose, go straight on. He followed his nosehe went on and on without any discretion or thought of consequences.
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He who follows truth too closely will have dirt kicked in his face. Be not too strict to pry into abuse, for odium veritas parit, Summum jus suprema est injuria.