Careful Words

observer (n.)

  It may well wait a century for a reader, as God has waited six thousand years for an observer.

John Kepler (1571-1630). Martyrs of Science (Brewster). P. 197.

He reads much;

He is a great observer, and he looks

Quite through the deeds of men.

William Shakespeare (1564-1616): Julius Caesar. Act i. Sc. 2.