The Now is pointed out; this Now. Now; it has already ceased to be when it is pointed out. The Now that is, is other than the one indicated, and we see that the Now is just this to be no longer the very time when it is. The Now as it is shown to us is one that has been, and that is its truth; it does not have the truth of being, of something that is. No doubt this is true, that it has been; but what has been is in point of fact not genuinely real, it is not, and the point in question concerned what is, concerned being.
— Phenomenology of Spirit
by G.W.F. Hegel