Following his tripartite division of knowledge, he finds all kinds of it arrange themselves under one of two classes, and to be either adequate or inadequate. By adequate knowledge he does not mean what is exhaustive and complete, but what, as far as it goes, is distinct and unconfused: by inadequate, he means what we know merely as fact either derived from our own sensations, or from the authority of others, while of the connexion of it with other facts, of the causes, effects, or meaning of it we know nothing. We may have an adequate idea of a circle, though we are unacquainted with all the properties which belong to it; we conceive it distinctly as a figure generated by the rotation of a line, one end of which is stationary. Phenomena, on the other hand, however made known to us--phenomena of the senses, and phenomena of experience, as long as they remain phenomena merely, and unseen in any higher relation--we can never know except as inadequately. We cannot tell what outward things are by coming in contact with certain features of them. We have a very imperfect acquaintance even with our own bodies, and the sensations which we experience of various kinds rather indicate to us the nature of these bodies themselves than of the objects which affect them. Now, it is obvious that the greater part of mankind act only upon knowledge of this latter kind. The amusements, even the active pursuits, of most of us remain wholly within the range of uncertainty, and, therefore, are full of hazard and precariousness: little or nothing issues as we expect. We look for pleasure and we find pain; we shun one pain and find a greater; and thus arises the ineffectual character which we so complain of in life--the disappointments, failures, mortifications which form the material of so much moral meditation on the vanity of the world. Much of all this is inevitable from the constitution of our nature. The mind is too infirm to be entirely occupied with higher knowledge. The conditions of life oblige us to act in many cases which cannot be understood by us except with the utmost inadequacy; and the resignation to the higher will which has determined all things in the wisest way, is imperfect in the best of us. Yet much is possible, if not all; and, although through a large tract of life 'there comes one event to all, to the wise and to the unwise,' 'yet wisdom excelleth folly as far as light excelleth darkness.' The phenomena of experience, after inductive experiment, and just and careful consideration, arrange themselves under laws uniform in their operation, and furnishing a guide to the judgment; and over all things, although the interval must remain unexplored for ever, because what we would search into is Infinite, may be seen the beginning of all things, the absolute eternal God. 'Mens humana,' Spinoza continues, 'quaedam agit, quaedam vero patitur.' In so far as it is influenced by inadequate ideas--'eatenus patitur'--it is