Graham liked the idea of protection on the downside.
A lot of companies have lots of assets tied up in plant and equipment. Well, is it old plant, or is it new plant?
Before selling, try to re-evaluate the company again and see where the stock sells in realtion to its book value.
I don't have a ticker-tape machine in my office.
Try to buy assets at a discount than to buy earnings.
Have a philosophy of investment and try to follow it.