"He maintained, according to his usual method, one hypothesis by another, and assumed that memory consists in certain traces made on the brain by the thoughts that pass through it, and that as long as they last we remember, but that the brain of the child in the womb being too moist, and too soft to preserve these traces, it is impossible he would remember out of the womb what he thought in it."
— St John, Henry, styled first Viscount Bolingbroke (1678-1751)
(Essay I, §2; vol. iii, pp. 366-7)
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).