I just finished this book today. It was an easy and fun read. The elderly always make me smile... I like their stories...I respect their mannerisms. They have seen so much throughout their lifetime... They have "been there and done that"... In my experience...people commonly have less "filtering" the older we get, becoming much more direct... open... straight to the point... I love this type of raw human nature...it is simply refreshing! The woman who interviews the "Centenarians" does a program for "National Public Radio (NPR)" and initially doesn't have much experience with the elderly. It is fun to watch her geriatric insight sprout and bloom paralleled with the "Centenarian" stories of the past and the present. My interest is further peaked by a reference book the author mentions, "A General Theory of Love". I plan to add it to my library list...it focuses on "the biological basis for human emotions...love". ...