Q. What is the chief end of man?
A. Man's chief end is to glorify God, and to enjoy him forever.
Eccl. 1.2; 12.8:
Vanity of vanities, saith the preacher, vanity of vanities; all is vanity.
Samuel Willard, A Compleat Body of Divinity, Sermon 3, p. 9:
What is Vanity but a missing the End? That Man, as to himself, had better never to have been born, that comes into the World, and goes out of it again, and misseth of the End he was born for. And yet how lamentably will this be found true of the Generality of Mankind, if we compare their lives by the End, which Religion tells us that all Men are made for?
George Horne, A Commentary on the Book of Psalms (re: Ps. 39.5), p. 155:
Behold, then, O Lord, the vanity of man; and be so merciful unto him, as to open his eyes, that he may behold it himself!
Charles Bridges, An Exposition of the Book of Ecclesiastes, p. vii:
What a stimulus to seek after the true and full knowledge of Christ is the realized conviction of the utter vanity of all things else without Him.