Seneca · On consolation to the bereaved
Letters 99.25
And in no wise do I approve of the remark of Metrodorus—that there is a certain pleasure akin to sadness, and that one should give chase thereto at such times as these. I am quoting the actual words of Metrodorus
Seneca, Letters to Lucilius 99.25, translated by Richard Mott Gummere