GKC quotations

"Mr. H. G. Wells and the Ginats," Heretics

It cannot be true that there is nothing abiding in what we know. For If that were so we should not know it all and should not call it knowledge. Our mental state may be very different from that of somebody else some thousands of years back; but it cannot be entirely different, or else we should not be conscious of a difference... The fact of two things being different implies that they are similar. The hare and the tortoise may differ in the quality of swiftness, but they must agree in the quality of motion. The swiftest hare cannot be swifter than an isosceles triangle or the idea of pinkness. When we say the hare moves faster, we say that the tortoise moves. And when we say of a thing that it moves, we say, without need of other words, that there are things that do not move. And even in the act of saying that things change, we say that there is something unchangeable.