"If we consider them like materials, for so they may be considered likewise, employed to raise the fabric of our intellectual system, they will appear like mud, and straw, and lath, materials fit to erect some frail, and homely cottage, but not of substance, nor value sufficient for the construction of those enormous piles, from whose lofty towers philosophers would persuade us that they discover all nature subject to their inspection, that they pry into the source of all being, and into the inmost recesses of all wisdom."
— St John, Henry, styled first Viscount Bolingbroke (1678-1751)
(Essay I, §2; vol. iii, pp. 365-6)
See "Letters or Essays Addressed to Alexander Pope, Esq." in the third volume of David Mallet's The Works of the Late Right Honorable Henry St. John, Lord Viscount Bolingbroke, 5 vols. (London : [s.n.], Printed in the Year 1754). <Link to ESTC><Link to ESTC>
Text from the third volume of The Works of the Late Right Honorable Henry St. John, Lord Viscount Bolingbroke, 5 vols. (Dublin: Printed by P. Byrne: 1793). <Link to Google Books>
Reading also in the 1967 reprint of The Works of Lord Bolingbroke, 4 vols. (London: Henry G. Bohn, 1844).