Here's anther two I've found



a sententia dicenda amovebo, ad ulciscendi tempora reservabo.
I will put aside while delivering my opinion, and reserve for a more fitting opportunity of revenge.
- Marcus Tullus Cicero, On the Consular Provinces (I)

nunquam deos ipsos admouere nocentibus manus; satis esse, si occasione ulciscendi laesos arment
The gods never lay hands themselves on the guilty; it is enough when they arm the injured with the opportunity for vengeance.
- Livy, The History of Rome (V,XI)