QUOTE : It is really not desirable for men who do not believe that knowledge is of value for its own sake to take up this kind of life. The question constantly put to us in civilization was and still is: "What is the use? Is there gold? or Is there coal?" The commercial spirit of the present day can see no good in pure science: the English manufacturer is not interested in research which will not give him a financial return within one year: the city man sees in it only so much energy wasted on unproductive work: truly they are bound to the wheel of conventional life.