Sine īrā et studiō is a Latin term meaning "without anger and passion".
It was coined by Roman historian Tacitus in the introduction to his Annals 1.1.,[1] which can be translated[2] as follows: The histories of Tiberius, Gaius, Claudius, and Nero, while they were in power, were falsified through terror, and after their death were written under the irritation of a recent hatred.
Hence my purpose is to relate a few facts about Augustus - more particularly his last acts, then the reign of Tiberius, and all which follows, without either bitterness or partiality, from any motives to which I am far removed.
not to get carried away by emotion when writing about war or crimes.
It is also the motto of the Czech Bureau for Foreign Relations and Information,[3] as well as of the Danish Army Military Police.