G. A. Johnston, An Introduction to Ethics, for Training Colleges… (1915)
“ It is a man's duty to be loyal to his vocation. He can do no more than this; but he should never do less. To be loyal to his vocation is a man's highest duty; and it is a duty that every man may attempt to perform, whether he be scavenger or king. It is at once the supreme duty and the universal duty. And if the man has himself chosen his vocation, his inclinations will be consonant with his duty: it will be his truest pleasure and surest happiness to respond to the claims made upon him by the vocation which he has himself chosen. ”
