The work of each individual contributes to a totality, and so becomes an undying part of the totality. That totality of human lives--past and present and to come--forms a tapestry that has been in existence now for many tens of thousands of years and has been growing more elaborate and, on the whole, more beautiful in all that time. Even the Spacers are an offshoot of the tapestry and they, too, add to the elaborateness and beauty of the pattern. An individual life is one thread in the tapestry and what is one thread compared to the whole? Daneel, keep your mind fixed firmly on the tapestry and do not let the trailing off of a single thread affect you.