* All dates for Zeno are disputed; the sources are contradictory. Zeller concludes to 350 for his birth and 260 for his death.⁵⁰

* Except in certain additions to terminology, like the word logic itself. Zeno’s pupil Aristo likened logicians to people eating lobsters, who take a great deal of trouble for a little morsel of meat concealed in much shell.⁵³

* We are relieved to learn that some of the Stoics were not quite certain on this point.

* Wars, said Chrysippus, are a useful corrective of overpopulation, and bedbugs do us the service of preventing us from oversleeping.⁵⁸

† Chrysippus proposed to limit the care of dead relatives to the simplest and quietest burial; it would be still better, he thought, to use their flesh as food.⁶⁰

* He argued the point so eloquently that a wave of suicides rose in Alexandria, and Ptolemy II had to banish him from Egypt.⁶⁶