Living the same sorrows three times was a suffering, but it was a suffering to relive even the same joys. The joy of life is born from feeling, whether it be joy or grief, always of short duration, and woe to those who know they will enjoy eternal bliss.
For Mallarmé naming an object meant suppressing three-quarters of its poetic pleasure (which consists in the joy of guessing bit by bit - "le suggérer, voilà le rêve!").