The Actions of the Will
There is an universal and essential difference between the actions of the will and all other actions. The will is one of the chief factors in belief, not that it creates belief, but because things are true or false according to the aspect in which we look at them. The will, which prefers one aspect to another, turns away the mind from considering the qualities of all that it does not like to see; and thus the mind, moving in accord with the will, stops to consider the aspect which it likes and so judges by what it sees.
Blaise Pascal, in 'Pensees'