I helped Ben with the third edition of Security Analysis, published in 1951.
I found that it was much better to look at the figures rather than people.
Stockbrokers aren't too interested in a stock you can sit there for five years with.
Use book value as a starting point to try and establish the value of the enterprise.
You have to have patience in this field.
I was in Graham's office the day he bought GEICO. Warren owns one-third of the stock today.