This is an excellent collection of quotes from mostly contemporary American personalities. What is good about the book is that most of the selected quotes are relatively fresh and are not overly quoted everywhere else!!
There were only two complaints I had were that i) the quotes are all lumped together and not grouped into categories so looking up a specific quote at a later point in time would be very very challenging and ii) the quotes are not really for the "professional" only, they are equally applicable to life in general. In fact, that is why this book makes it such a good read.