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.

You don't need the iPhone: you have the most exquisite apparatus in the known universe sitting right in your head - the most complex organization of matter in the entire universe. And here are we, feeling a little depressed, feeling like we're not getting where we need to be, when really you might be exactly where you need to be.

The idea of copyright did not exist in ancient times, when authors frequently copied other authors at length in works of non-fiction. This practice was useful, and is the only way many authors' works have survived even in part.