of such a man that he knows. He is a scientist, a man of knowledge.
But the attainment of scientific knowledge is not the end, great as it is. Men do not attain knowledge for themselves alone, nor to keep it locked secretly in their hearts, like a beautiful jewel in a dark chest. The end of such knowledge is use, service, the increase of the comfort and happiness of the world. Thus, when a man has become a scientist, he gives the world the benefit of his knowledge, and unselfishly bestows upon mankind the results of all his labours. Thus, beyond knowledge, there is a further step of Use: that is, the right and unselfish use of the knowledge acquired; the application of knowledge to invention for the common weal.
It will be noted that the five steps or
