Man is so made that by continually telling him he is a fool he believes it, and by continually telling it to himself he makes himself believe it. For man holds an inward talk with his self alone, which it behoves him to regulate well
 Blaise Pascal, Pensées (1670). copy citation

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Author Blaise Pascal
Source Pensées
Topic self-knowledge
Date 1670
Language English
Reference
Note Translated by W. F. Trotter
Weblink http://www.gutenberg.org/files/18269/18269-h/18269-h.htm

Context

“They teach us that we have been despised. They do not prevent our being so in the future; for we have many other faults for which we may be despised. They prepare for us the exercise of correction and freedom from fault. 535 Man is so made that by continually telling him he is a fool he believes it, and by continually telling it to himself he makes himself believe it. For man holds an inward talk with his self alone, which it behoves him to regulate well: Corrumpunt bonos mores colloquia prava. [199] We must keep silent as much as possible and talk with ourselves only of God, whom we know to be true; and thus we convince ourselves of the truth. 536 Christianity is strange.” source