Errata

page 49: 'spirtiual'->'spiritual' page 51: 'spirtual'->'spiritual' page 95: 'misundertandings'->'misunderstandings' page 139: 'underly'->'underlie' page 147: 'ourself'->'ourselves' page 165: 'undertsanding'->'understanding' page 185: 'iregular'->'irregular'