This book is an excellent way for someone to gain experience though an autobiobraphy. As such it covers most investment fallacies and mistakes new investors tend to make. His big run up in value took place with large companies that were rapidly growing during the late 1950's. He was wise enough to select stocks that went up 200%, 300% or more in a matter of a year or two. His job shielded him from getting too close to the daily ups and downs of Wall Street, which worked for his advantage. I am not sure this can be repeated in today's modern investment world. So much has changed and communications are now at light speed. Still an excellent read.