Detail from "Democrito" (Democritus) by Peter Paul
Rubens (1577-1640), c. 1635-1637 - Museo del Prado, Madrid, Spain.
Democritus of Abdera (540-470 BC) is known as the "laughing philosopher".
Democritus advanced mechanistic views of the universe (atomic theory) and felt
that "chance" did not exist because it represented ignorance of cause.
(see Democritus by Brugghen).
For contrast, to represent pessimism, painters portrayed Heraclitus of
Ephesus (540-470 BC) who felt pity for humanity because he knew that in biology
and life "all is in flux" (see Heraclitus by Rubens
and Brugghen).