It is important to mark this characteristic feature of his system; for while we have directly nothing to do with by far the larger part of his speculations, which relate to questions foreign to our present inquiry, yet the fact that his ethical and political conclusions are deduced from the same principles on which his Pantheistic theory is founded, serves at once to account for the extensive influence which his writings have exerted on every department of modern speculation, and also to show that, in opposing that system, we are entitled to found on the conclusions which he has himself deduced from it, for the purpose of disproving the fundamental principles on which it rests.

For if, on the one hand, the principles which he assumes in his definitions and axioms do necessarily involve the conclusions which are propounded in his Ethics and Politics; and if, on the other hand, these conclusions are found to be at variance with the highest views of Morality and Government, then the more logical the process by which they have been deduced, the more certain will it be that there is some fundamental flaw in the basis on which the whole superstructure is reared.

In other cases, it might be doubtful how far the consequences that may seem to be deducible from a theory could be legitimately urged in argument, especially when these consequences are disavowed by the author of it; but, in the present case, the consequences are explicitly declared, not less than the principles,--they are even exhibited as corollaries rigorously deduced from them; and thus the very comprehensiveness of the system, which gives it so much of the aspect of completeness, and which has fascinated the minds of speculative men, always fond of bold and sweeping generalizations, may be found to afford the most conclusive proof of its inherent weakness, and to show that it comes into fatal collision, at all points, not only with the doctrines of Natural and Revealed Religion, but also with the practical duties and political rights of mankind.
We may present, in brief compass, a comprehensive summary of the doctrine of Spinoza.

The fundamental principle of his whole theory is contained in the assumption with which he sets out,--that the entire system of Being consists only of _three_ elements, "Substance, Attributes, and Modes," and in the _definitions_ which are given of these terms respectively.

With him, Substance is Being; not this or that particular being, nor even being in general, considered in the abstract, but absolute Being,--Being in its plentitude, which comprehends all existences that can be conceived without requiring the concept of any other thing, and without which no other thing can either exist or be conceived.[121] By an "Attribute" he means, not substance, but a manifestation of substance, yet such a manifestation as belongs to its very essence; and, by a "Mode," he means an affection of substance, or that which exists in another thing, and is conceived by means of that thing.