G. A. Johnston, An Introduction to Ethics, for Training Colleges… (1915)
“ Only the optimist can give loyal and whole-hearted service. Unless a man believes in the value of his work and the future of his cause, he cannot throw himself with all his energy into the tasks of his vocation. But it is well to remember not merely that we have a right to be optimistic, but that optimism is imposed upon us almost as a duty. For optimism is a kind of courage. True optimism does not consist in building castles in the air and hiding like an ostrich from things as they are. Such a combination of sentimentality and timidity is removed by the world's breadth from true optimism. ”
