“Being immersed in the commercial world constrains the mind, limiting it to conventional, acceptable thought; it is hard to close a sale if we pause in the proceedings to meditate at length about a man’s relation to the cosmos.”

-Daniel Klein, “Travels with Epicurus” – on aging well and gracefully with purpose, through the ruminations of an old man dawdling through the timeless philosophy of the wise.  You can get the book on Amazon.