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 which a part of its conditions is realized, though, by and in the possible, this actual basis need not be expressed, but may be merely understood. And, since the conditions are manifold, and since the part which is taken as real is largely variable, possibility varies accordingly. Its way of completing itself, and in particular the actual basis which it implies, are both capable of diversity. Thus the possibility of an element is different, according as it is understood in these diverse relations. Possibility and chance, we may say, stand to one another thus. An actual fact more or less ignores the ideal complement which, within its own being, it involves. And hence, if you view it merely in relation to some system which falls outside itself, the actual fact is, so far, chance. The possible, on the other hand, explicitly isolates one part of the ideal complement, and, at the same time, implies, more or less vaguely, its real completion. It fluctuates, therefore, with the various conditions which are taken as necessary to complete it. But of these conditions part must have actual existence, or must, as such, be real.

And this account still holds good, when we pass to the lowest grade of possibility. I take an idea, which, in the first place, I cannot call unmeaning. And this idea, secondly, I do not see to contradict itself or the Reality. I therefore assume that it has not this defect. And, merely on the strength of this, I go on to call such an idea possible. It might seem as if here we had passed from relative to unconditional possibility; but that view would be erroneous. The possible here is still a consequence from conditions, part of which is actual. For, though of its special conditions we know nothing, we are not quite ignorant. We have assumed in it more or less of the general character, material and formal, which is owned by Reality. This character is its actual basis and real ground of possibility.