O monge negro (Novelas Imortais)

In ancient times a happy man grew at last frightened of his happiness -- it was so great! -- and to propitiate the gods he brought as a sacrifice his favourite ring. Do you know, I, too, like Polykrates, begin to be uneasy of my happiness. It seems strange to me that from morning to night I feel nothing but joy; it fills my whole being and smothers all other feelings. I don't know what sadness, grief, or boredom is. Here I am not asleep; I suffer from sleeplessness, but I am not dull. I say it in earnest; I begin to feel perplexed.