Experience has made law by various acts.
Pereat unus, ne pereant omnes.
Let one perish, lest all should perish.
Periculosum est quod non bonorum virorum comprobatur exemplis.
That is dangerous which is not countenanced by the examples of good men.
Periculosum est res novas et inusitatas inducere.
It is dangerous to introduce strange and unusual things.
Perjurii pœna divina exitium humana dedecus.
The divine punishment of perjury is destruction; the human punishment is disgrace.
Perjuri sunt qui servatis verbis juramenti decipiunt aures eorum qui accipiunt.