Even defensive portfolios should be changed from time to time, especially if the securities purchased have an apparently excessive advance and can be replaced by issues much more reasonable priced.
Benjamin GrahamThe function of the margin of safety is, in essence, that of rendering unnecessary an accurate estimate of the future.
Benjamin GrahamWhen somebody asserts that a stock has an earning power of so much, I am sure that the person who hears him doesn't know what he means, and there is a good chance that the man who uses it doesn't know what it means.
Benjamin GrahamThe investor should be aware that even though safety of its principal and interest may be unquestioned, a long term bond could vary widely in market price in response to changes in interest rates.
Benjamin GrahamIt always seemed, and still seems, ridiculously simple to say that if one can acquire a diversified group of common stocks at a price less than the applicable net current assets alone - after deducting all prior claims, and counting as zero the fixed and other assets - the results should be quite satisfactory.
Benjamin Graham