Whoso is free from sorrow is happy
The wise man is happy

The delight which the early Stoics took in this pure play of the
intellect led them to pounce with avidity upon the abundant stock of
fallacies current among the Greeks of their time. These seem--most of
them--to have been invented by the Megarians and especially by
Eubulides of Miletus a disciple of Eucleides but they became
associated with the Stoics both by friends and foes who either praise
their subtlety or deride their solemnity in dealing with them.
Chrysippus himself was not above propounding such sophisms as the
following--

Whoever divulges the mysteries to the uninitiated commits impiety
The hierophant divulged the mysteries to the uninitiated
The hierophant commits impiety

Anything that you say passes through your mouth
You say a wagon
A wagon passes through your mouth

He is said to have written eleven books on the No-one fallacy. But
what seems to have exercised most of his ingenuity was the famous
Liar, the invention of which is ascribed to Eubulides. This fallacy
in its simplest form is as follows. If you say truly that you are
telling a lie, are you lying or telling the truth? Chrysippus set
this down as inexplicable. Nevertheless he was far from declining to
discuss it. For we find in the list of his works a treatise in five
books on the Inexplicables an Introduction to the Liar and Liars for
Introduction, six books on the Liar itself, a work directed against