To know a thing does not enable us, always, to prevent its happening, but after all the things that we know we do hold, if not in our hands, at any rate in our minds, where we can dispose of them as we choose, which gives us the illusion of a sort of power to control them.
 Marcel Proust, Swann's Way (1913). copy citation

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Author Marcel Proust
Source Swann's Way
Topic illusion power
Date 1913
Language English
Reference
Note Translated by C. K. Scott Moncrieff
Weblink http://www.gutenberg.org/files/7178/7178-h/7178-h.htm

Context

“And while he was writing to one of his friends, asking him to try to get a little light thrown upon some point or other, he would feel a sense of relief on ceasing to vex himself with questions to which there was no answer and transferring to some one else the strain of interrogation. It is true that Swann was little the wiser for such information as he did receive. To know a thing does not enable us, always, to prevent its happening, but after all the things that we know we do hold, if not in our hands, at any rate in our minds, where we can dispose of them as we choose, which gives us the illusion of a sort of power to control them. He was quite happy whenever M. de Charlus was with Odette. He knew that between M. de Charlus and her nothing untoward could ever happen, that when M. de Charlus went anywhere with her, it was out of friendship for himself, and that he would make no difficulty about telling him everything that she had done.” source