But just as little as the real man can abstract himself from the distinction of sex, so little can he abstract himself from his moral or spiritual constitution, which indeed is profoundly connected with his natural constitution. Precisely because he lives in the contemplation of the whole, he also lives in the consciousness that he is himself no more than a part, and that he is what he is only by virtue of the conditions which constitute him a member of the whole, or a relative whole. Every one, therefore, justifiably regards his occupation, his profession, his art or science, as the highest; for the mind of man is nothing but the essential mode of his activity. He who is skilful in his profession, in his art, he who fills his post well, and is entirely devoted to his calling, thinks that calling the highest and best. How can he deny in thought what he emphatically declares in act by the joyful devotion of all his powers? If I despise a thing, how can I dedicate to it my time and faculties? If I am compelled to do so in spite of my aversion, my activity is an unhappy one, for I am at war with myself. Work is worship. But how can I worship or serve an object, how can I subject myself to it, if it does not hold a high place in my mind? In brief, the occupations of men determine their judgment, their mode of thought, their sentiments. And the higher the occupation, the more completely does a man identify himself with it. In general, whatever a man makes the essential aim of his life, he proclaims to be his soul; for it is the principle of motion in him. But through his aim, through the activity in which he realises this aim, man is not only something for himself, but also something for others, for the general life, the species. He therefore who lives in the consciousness of the species as a reality, regards his existence for others, his relation to society, his utility to the public, as that existence which is one with the existence of his own essence--as his immortal existence. He lives with his whole soul, with his whole heart, for humanity. How can he hold in reserve a special existence for himself, how can he separate himself from mankind? How shall he deny in death what he has enforced in life? And in life his faith is this: Nec sibi sed toti genitum se credere mundo.