AC Grayling does some nice one-liners in the weekend guardian..
A human lifespan is less than a thousand months long. You need to make some time to think how to live it.
Science is the outcome of being prepared to live without certainty and therefore a mark of maturity. It embraces doubt and loose ends.
Life is all about relationships. By all means sit cross-legged on top of a mountain occasionally. But don't do it for very long.
The Athesiest's Guide to Christmas book will be out in time, for, well...