content: This book is another self-help book. I enjoyed the book HOWEVER, IT LOST SOME CREDIBILITY WHEN I read the last sentenced, in the first paragraph of page 171 of Chapter Six, The Principle of Sound and Light. It reads:"In the physical world of matter, Sound precedes Light, as we know from hearing the thunder before we see the lightning in a storm. *****Maybe, I am confused, but, I see lightning FIRST and start the ONE ONE THOUSAND count down to hear the thunder and determine how far away the storm is.