I have found that sadness is a large part of elven history, betrayals and ruin and loss are it's main source. The eternal question of what could have been had mankind not continued it's thorough destruction of nature (which thankfully they have never been able to do completely). But anyway back to the point, this sadness is deep and complex with hurts we might never heal completely yet i find that this sadness is mingled with hope and love. So much in some cases that the sadness is left behind yet always leaving it's subtle mark. Not all sadness is bad and some is necessary to find greater joy and hope. I fear i may have rambled for a bit so to some up what i am trying to say is that elves have a unique talent for turning sadness and despair into hope and endurance to stand against the dark times while pursuing love in it's fullest potential.