The 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 GrahamMathematics is ordinarily considered as producing precise and dependable results; but in the stock market the more elaborate and abstruse the mathematics the more uncertain and speculative are the conclusions we draw there from. Whenever calculus is brought in, or higher algebra, you could take it as a warning that the operator was trying to substitute theory for experience, and usually also to give to speculation the deceptive guise of investment.
Benjamin GrahamMost of the time common stocks are subject to irrational and excessive price fluctuations in both directions as the consequence of the ingrained tendency of most people to speculate or gamble... to give way to hope, fear and greed.
Benjamin Graham