What need is there of suspicious fear

 The George Long translation of 1862:

What need is there of suspicious fear, since it is in thy power to inquire what ought to be done?  Marcus Aurelius. Meditations. Book 10.

Chrystal's 2017 rendering based on the Foulis translation of 1742:

What need for suspicion when it is open for you to consider what ought to be done? Marcus Aurelius. Meditations. Book 10.

Image: Votive relief of a haruspex dedicated by Caius Fulvius Salvis from the Temple of Hercules, 1st century BCE courtesy of Wikimedia Commons contributor Jamie Heath (CC BY-SA 2.0).