Under the water all these adjustments vanished, and if a particularly interesting small fish passed in the distance, I found that in my drawing it was depicted very much larger than some dull fellow twice the size who happened to be near at hand. This suggests a parallel with primitive art, where objects were drawn on cave wall or canvas according to their importance to the artist, and not according to mathematics and laws of optics. Doubtless, when I have dived more often, I shall begin those accursed adjustments of reason, and may even, in time, write a textbook on the subject. God forbid!"
Blue Angels and Whales Robert Gibbings