By this principle I do not indeed learn what the object is to which that sort of causality is attributed; but I remove the difficulty, for, on the one side, in the explanation of events in the world, and consequently also of the actions of rational beings, I leave to the mechanism of physical necessity the right of ascending from conditioned to condition ad infinitum, while on the other side I keep open for speculative reason the place which for it is vacant, namely, the intelligible, in order to transfer the unconditioned thither.
batetik, munduko gertaeran argiketan, eta beraz, zerizan arrazoidunen ekintzetan ere bai, natur beharrezkotasunaren mekanismoari zilegiztatzen diot baldintzatua denetik baldintzara amaigaberaino itzultzea;