Sehnsucht is a German noun translated as "longing", "desire", "yearning", or “craving”. It can be replaced in other words, but cannot be defined. In most cases, it expresses a state of sadness, but is also full of hope. We are all in a siege of "life". Those outside try to rush in and those inside try to escape. The loss of the present moment is the core of illusion, even if struggle, pain, people can not escape from the ontological tragedy. All we need to do is live in the moment.