When a dog is tied to a cart, if it wants to follow, it is pulled and follows, making its spontaneous act coincide with necessity. But if the dog does not follow, it will be compelled in any case. So it is with men too: even if they don’t want to, they will be compelled to follow what is destined.
– Zeno of Citium
The Refutation of All Heresies, by Hippolytus.