W. E. B. Du Bois
A classic is a book that doesn't have to be written again.
The return from your work must be the satisfaction which that work brings you and the world's need of that work. With this, life is heaven, or as close to heaven as you can get. Without this - with work which you despise, which bores you can which the world does not need - this life is hell.
Believe in life! Always human beings will live and progress to greater, broader and fuller life.