An author never does more damage to his readers than when he hides a difficulty.


Preface of Deux mémoires d'Analyse pure, October 8, 1831, edited by Jules Tannery (1908)


An author never does more damage to his readers than when he hides a difficulty.

An author never does more damage to his readers than when he hides a difficulty.

An author never does more damage to his readers than when he hides a difficulty.

An author never does more damage to his readers than when he hides a difficulty.