Pliny the Younger (A.D. 62?c.A.D. 113). Letters. The Harvard Classics. 190914.
LXXIV. To Calpurnia
YOU1 will not believe what a longing for you possesses me. The chief cause of this is my love; and then we have not grown used to be apart. So it comes to pass that I lie awake a great part of the night, thinking of you; and that by day, when the hours return at which I was wont to visit you, my feet take me, as it is so truly said, to your chamber, but not finding you there I return, sick and sad at heart, like an excluded lover. The only time that is free from these torments is when I am being worn out at the bar, and in the suits of my friends. Judge you what must be my life when I find my repose in toil, my solace in wretchedness and anxiety. Farewell.