By Lynne Truss, Gotham Brooks, 2003, 1-592-40087-6 A hilariously funny book about punctuation. Truss is a great writer with a penchant for details. She makes an normally boring topic into a very interesting and even exciting read.
[p202] Proper punctuation is both the sign and the cause of clear thinking. If it goes, the degree of intellectual impoverishment we face is unimaginable.