2523. THAT THE SCIENCES ARE NOT TO BE REJECTED, AND IT IS SIMILAR WITH PLEASURES, WHICH ARE NOT REJECTED BUT APPLIED. The sciences are not therefore to be rejected, because they cause a man to be insane, when he wishes from them to be wise in spiritual and celestial things; thus [used] they pervert and blind; but if truths are confirmed by them, they then illuminate, because man is in sciences. Likewise the pleasures which [belong] to the mind [animi] and body are not to be rejected because they destroy and blind man, but he is left to enjoy them for [ad] the use as before; thus they may only be applied to uses, for pleasures are the life of the body, wherefore also they are given to [bestowed on] uses. - 1748, July 4.