Meaning and spirituality: Cortesi, Secular Wholeness: A Skeptic's Paths To A Richer Life

An engineer's take on how to achieve the benefits of religion without the dogma. It's free online in HTML and PDF. It has lots of references to source material (books and journal articles), pulls from all the major religions and philosophies, and attempts to describe exactly how what they do benefits people (community, feeling of purpose, etc.) and then outlines ways these can be achieved in a naturalistic world.