Henry Scougal, professor of divinity at the University of Aberdeen who died at age 28 of tuberculosis, in a 1677 letter to a friend--
Never doth a soul know what solid joy and substantial pleasure is, till once, being weary of itself, it renounce all propriety, give itself up unto the Author of its being, and feel itself become a hallowed and devoted thing, and can say, I am content to be anything for him, and care not for myself, but that I may serve him.
--
Henry Scougal,
The Life of God in the Soul of Man (Christian Focus 1996; repr.), 96
