Letters to a Young Poet. Rilke Rainer Maria

…ask yourself whether these large sadnesses haven’t rather gone right through you. Perhaps many things inside you have been transformed; perhaps somewhere, deep inside your being, you have undergone important changes while you were sad.
…
The only sadnesses that are dangerous and unhealthy are the ones that we carry around in public in order to drown them out with the noise; like diseases that are treated superficially and foolishly, they just withdraw and after a short interval break out again all the more terribly; … If only it were possible for us to see farther than our knowledge reaches, and even a little beyond the outworks of our presentiment, perhaps we would bear our sadnesses with greater trust than we have in our joys.