Mind and Matter 77 meets to one another that cross each other and undo each other and, in the undoing, do and, in the doing, undo, and so see-saw ad infmilum. Organic and Inorganic Animals and plants cannot understand our business, so we have denied that they can understand their own. What we call inorganic matter cannot understand the animals' and plants' business, we have therefore denied that it can under- stand anything whatever. What we call inorganic is not so really, but the organisa- tion is too subtle for our senses or for any of those appliances with which we assist them. It is deducible however as a necessity by an exercise of the reasoning faculties. People looked at glaciers for thousands of years before they found out that ice was a fluid, so it has taken them and will continue to take them not less before they see that the inorganic is not wholly inorganic. The Power to make Mistakes This is one of the criteria of life as we commonly think of it. If oxygen could go wrong and mistake some other gas for hydrogen and thus learn not to mistake it any more, we should say ox3-Tgen was alive. The older life is, the more unerring it becomes in respect of things about which it is conversant—the more like, in fact, it becomes to such a thing as the force of gravity, both as regards unerringness and unconsciousness. Is life such a force as gravity in process of formation, and was gravity once—or rather, were things once liable to make mistakes on such a subject as gravity ? If any one will tell me what life is I will tell him whether the inorganic is alive or not. The Omnipresence of Intelligence A little while ago no one would admit that animals had intelligence. This is now conceded. At any rate, then, vegetables had no intelligence. This is being fast disputed,