Of the moral field he had, it need hardly be added, a quite childish and perfunctory conception. There the prayer-book and the catechism could solve every problem. He lacked the feeling, possessed by all large and mature minds, that there would be no intelligibility or value in things divine were they not interpretations and sublimations of things natural. To master the real world was an ancient and not too promising ambition: it suited his youthful radicalism better to exorcise or to cajole it. He sought to refresh the world with a water-spout of idealism, as if to change the names of things could change their values. Away with all arid investigation, away with the cold algebra of sense and reason, and let us have instead a direct conversation with heaven, an unclouded vision of the purposes and goodness of God; as if there were any other way of understanding the sources of human happiness than to study the ways of nature and man. Converse with God has been the life of many a wiser and sadder philosopher than Berkeley; but they, like Plato, for instance, or Spinoza, have made experience the subject as well as the language of that intercourse, and have thus given the divine revelation some degree of pertinence and articulation. Berkeley in his positive doctrine was satisfied with the vaguest generalities; he made no effort to find out how the consciousness that God is the direct author of our incidental perceptions is to help us to deal with them; what other insights and principles are to be substituted for those that disclose the economy of nature; how the moral difficulties incident to an absolute providentialism are to be met, or how the existence and influence of fellow-minds is to be defended. So that to a piety inspired by conventional theology and a psychology that refused to pass, except grudgingly and unintelligently, beyond the sensuous stratum, Berkeley had nothing to add by way of philosophy. An insignificant repetition of the truism that ideas are all “in the mind” constituted his total wisdom. To be was to be perceived. That was the great maxim by virtue of which we were asked, if not to refrain from conceiving nature at all, which was perhaps impossible at so late a stage in human development, at least to refrain from regarding our necessary thoughts on nature as true or rational. Intelligence was but a false method of imagination by which God trained us in action and thought; for it was apparently impossible to endow us with a true method that would serve that end. And what shall we think of the critical acumen or practical wisdom of a philosopher who dreamed of some other criterion of truth than necessary implication in thought and action? [Sidenote: Truism and sophism.]