Richard Allestree (1621/22–1681) was an English Royalist churchman and provost of Eton College. He fought for Charles I while an Oxford student, served as a royal chaplain and agent during the king's exile, and after the Restoration became canon of Christ Church and regius professor of divinity. He is traditionally credited with The Whole Duty of Man and wrote The Government of the Tongue and The Art of Contentment.
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A handbook of godly speech by Richard Allestree, published in 1674. Allestree examines the tongue's power for good and for harm — oaths, slander, boasting, and idle talk on one side; truth, meekness, and edifying words on the other — and gives practical rules for governing it. A searching little work on an everyday Christian duty.