“So far, it has been physical science that has had most effect upon our lives, but in the future physiology and psychology are likely to be far more potent. When we have discovered how character depends upon physiological conditions, we shall be able, if we choose, to produce far more of the type of human being that we admire. Intelligence, artistic capacity, benevolence – all these things no doubt could be increased by science. There seems scarcely any limit to what could be done in the way of producing a good world, if only men would use science wisely.”