Life And Adventures Of Martin Chuzzlewit by Charles Dickens

The doctor's prognostication in reference to the weather was speedily verified. Although the weather was not a patient of his, and no third party had required him to give an opinion on the case, the quick fulfilment of his prophecy may be taken as an instance of his professional tact; for, unless the threatening aspect of the night had been perfectly plain and unmistakable, Mr Jobling would never have compromised his reputation by delivering any sentiments on the subject.

He used this principle in Medicine with too much success to be unmindful of it in his commonest transactions.