"A few useful Things perhaps, mixed and confounded with many Trifles and all manner of Rubbish fill up their Memories, and compose their intellectual Possessions. 'Tis a great Happiness therefore to distinguish things aright, and to lay up nothing in the Memory but what has some just Value in it, and is worthy to be number'd as a Part of our Treasure."
— Watts, Isaac (1674-1748)
Most text drawn from Google Books. See The Improvement of the Mind: or, a Supplement to the Art of Logick: Containing a Variety of Remarks and Rules for the Attainment and Communication of Useful Knowledge, in Religion, in the Sciences, and in Common Life. By I. Watts, D.D. (London: Printed for James Brackstone, at the Globe in Cornhill, 1741). <Link to ESTC><Link to 2nd edition in Google Books>