The chief cause of human errors is to be found in the prejudices picked up in childhood.
Rene DescartesThe entire method consists in the order and arrangement of the things to which the mind's eye must turn so that we can discover some truth.
Rene DescartesFor how do we know that the thoughts which occur in dreaming are false rather than those others which we experience when awake, since the former are often not less vivid and distinct than the latter?
Rene Descartes