The central theme of existentialism: to live is to suffer, to survive is to find meaning in the suffering. If there is a purpose in life at all, there must be a purpose in suffering and in dying. But no man can tell another what this purpose is. Each must find out for himself, and must accept the responsibility that his answer prescribes. If he succeeds he will continue to grow in spite of all indignities.
Gordon W. Allport on the preface of Viktor Frankl’s masterpiece: Man’s Search for Meaning.