By moving them vertically, a representative mean curve could be formed, and individual events were then characterized by individual logarithmic differences from the standard curve.

If one introduces the concept of energy of an earthquake then that is a theoretically derived quantity.

I was lucky because logarithmic plots are a device of the devil.

Don't wait for extraordinary circumstance to do good; try to use ordinary situations.

I'm glad to see the press now referring to the open-ended Richter scale.