康德提到，無論係空間，定係空間入面任何一個幾何學嘅先天規定，都唔係一種先驗嘅表象，而只有關於呢啲表像根本唔具有經驗嘅來源、以及佢哋重係能夠先天噉同經驗對象發生關係嘅呢種可能性知識，先可以稱之為先驗。
Kant argues that neither space, nor any of the innate stipulations of geometry in space, is not a priori appearances, but only the knowledge of the possibility that these appearances have no empirical source at all, and that they are still able to relate to the object of experience as a priori.