If you set to work to believe everything, you will tire out the believing-muscles of your mind, and then you'll be so weak you won't be able to believe the simplest true things.
(Lewis Carroll [Charles Lutwidge Dodgson] (1832-1898), British author, mathematician, clergyman. Letter, May 23, 1864, to Mary MacDonald, daughter of the poet-novelist George MacDonald. The Letters of Lewis Carroll, vol. I, ed. Morton N. Cohen, Oxford University Press (1979).)
We believe ... that the applause of silence is the only kind that counts.
(Alfred Jarry (1873-1907), French playwright, author. repr. in The Selected Works of Alfred Jarry, eds. Roger Shattuck and Simon Watson Taylor (1965). "Twelve Theatrical Topics," topic 12, published in Dossiers Acénonètes due Collège de 'Pataphysique, no. 5 (1960).)
The strength of the vampire is that people will not believe in him.
(Garrett Fort (1900-1945), U.S. screenwriter, and Tod Browning. Abraham Van Helsing (Edward Van Sloan), Dracula, trying to convince Mina's father and fiance that vampires do exist (1931).
From the play adapted by Hamilton Deane and John Balderston (1899-1954).)