Full Idea
If one were to ascribe succession to time itself, one would have to think yet another time in which this succession would be possible.
Gist of Idea
If time involved succession, we must think of another time in which succession occurs
Source
Immanuel Kant (Critique of Pure Reason [1781], B226/A183)
Book Reference
Kant,Immanuel: 'Critique of Pure Reason', ed/tr. Guyer,P /Wood,A W [CUO 1998], p.300
A Reaction
The implication of this might be that while we must believe that time exists, we are utterly incapable of imagining its existence.