The primacy of Will over Mind

[539] There is a universal and essential difference between acts of will and all others.

The will is one of the chief organs of belief, not because it creates belief, but because things are true or false according to the aspect by which we judge them. When the will likes one aspect more than another, it deflects the mind from considering the qualities of the one it does not care to see. Thus the mind, keeping in step with the will, remains looking at the aspect preferred by the will and so judges by what it sees there.

Blaise Pascal - Pensées 

[  Schopenhauer approves 😀  ]