“Nothing much is really the way it seems. If you could travel faster than light, you might set out on a trip and arrive back before you leave.”~Einstein

Einstein also said that there’s really no such thing in the universe as a straight line. In the art world, when it comes to perspective, that seems to be the case. As straight lines stretch farther from the center, they appear slightly curved. Classical builders learned to add slight curvatures to columns and long walls to compensate for the way we see.

Cube From Below:

We would normally draw a cube in perspective, seen from below, likethis, with its vertical edges remaining vertical.

Vertical Edges Recede:

The vertical edges of the cube are not parallel. Think of a skyscraper. Seen from one end-from below or above-the parallel vertical edges appear to converge just as the horizontal parallel edges. There is a third vanishing point where the vericals meet.