On this occasion Dr Whistler told a pretty story related by Muffett, a good author, of Dr Cayus that built Key’s College: that being very old and lively only at that time upon woman’s milk, he, while he fed upon the milk of a angry fretful woman, was so himself; and then being advised to take of a good-natured patient woman, he did become so, beyond the common temper of his age.

Samuel Pepys, Diary of Samuel Pepys, 1669