Charles Francis Richter

I repeatedly have to correct this belief. In a sense, magnitude involves steps of 10 because every increase of one magnitude represents a tenfold amplification of the ground motion. But there is no 'scale of 10' in the sense of an upper limit.

The sea has this contradictory quality, that the more you see of it, the more it overwhelms the eye and disappears in its own brightness. Like a flame, whose meaning is light but whose centre is dark, it demands to be undefined.