“Why should any of these things that happen externally, so much distract thee? Give thyself leisure to learn some good thing, and cease roving and wandering to and fro. Thou must also take heed of another kind of wandering, for they are idle in their actions, who toil and labour in this life, and have no certain scope to which to direct all their motions, and desires.”

Marcus Aurelius, Meditations, Book II