[...] le cerveau ne détermine pas la pensée ; et par conséquent la pensée, en grande partie du moins, est indépendante du cerveau. - Henri Bergson

Il suffit que nous bouchions nos oreilles au son de la musique, dans un salon où l'on danse, pour que les danseurs nous paraissent aussitôt ridicules. Combien d'actions humaines résisteraient à une épreuve de ce genre?

By the sole fact of being accomplished, reality casts its shadow behind it into the indefinitely distant past: it thus seems to have been pre-existent to its own realization, in the form of a possible. From this results an error which vitiates our conception of the past; from this arises our claim to anticipate the future on every occasion

Matter and mind have this in common, that certain superficial agitations of matter are expressed in our minds, superficially, in the form of sensations; and on the other hand, the mind, in order to act upon the body, must descend little by little toward matter and become spatialized. It follows that the intelligence, although turned toward external things, can still be exerted on things internal, provided that it does not claim to plunge too deeply.