  In Remark 1, Kant then shows how his position differs from that of other authors. Newton “by no means dared to prove this law a priori, and therefore appealed rather to experience” (4:449). Kepler likewise derived it from experience, though he went further, conceiving of it in terms of a special force of inertia. Certain unnamed “transfusionists” (presumably Locke and perhaps Descartes or Rohault) attempted to deny the law altogether by suggesting that motion could simply be transferred from one body to another in the communication of motion, a view Kant rejects on the grounds that explaining the communication of motion in terms of the transfer of motion is no explanation at all and also amounts to admitting that accidents could be literally transferred from one substance to another.