Meditations by Marcus Aurelius Book 10 Page 18

And contenting himself with these two things, to do all things justly, and whatsoever God doth send to like well of it: what others shall either say or think of him, or shall do against him, he doth not so much as trouble his thoughts with it. To go on straight, whither right and reason directed him, and by so doing to follow God, was the only thing that he did mind, that, his only business and occupation.

XIII. What use is there of suspicion at all? or, why should thoughts of mistrust, and suspicion concerning that which is future, trouble thy mind at all? What now is to be done, if thou mayest search and inquiry into that, what needs thou care for more? And if thou art well able to perceive it alone, let no man divert thee from it.

But if alone thou doest not so well perceive it,