have not the absence of ideas but the presence of the most vulgar and sentimental ideas that happen to be common to their social clique. If a biologist had no views on art and morals it might be all very well. The truth is that a biologist has all the wrong views of art and morals that happen to be going about in the smart set in his time. If Professor Tyndall had held no views about politics, he could have done no harm with his views about evolution. Unfortunately, however, he held a very low order of political ideas from his sectarian and Orange ancestry; and those ideas have poisoned evolution to this day. In short, the danger of the mere technical artist or expert is that of becoming a snob or average silly man in all things not affecting his peculiar topic of study; wherever he is not an extraordinary man he is a particularly stupid ordinary man. The very fact that he has studied machine guns to fight the French proves that he has not studied the French. Therefore he will probably say that they eat frogs. The very fact that he has learnt to paint the light on medieval armour proves that he has not studied the medieval philosophy. Therefore he will
