It is incumbent, therefore, on every enlightened advocate of Christian Theism to exercise a prudent discretion in the treatment of this topic, and to guard equally against the danger either of being led to exaggerate the extent, or of being blinded to the existence of the evil.

Nor is it difficult to discover a safe middle path between the opposite extremes: it is only necessary to define, in the first instance, what we mean when we speak of Theism or Atheism respectively, and then to ascertain, in the second place, whether any, and what, parties have avowed principles which should fairly serve to connect them with the one system or with the other.

A clear conception of the radical principle or essential nature of Atheism is indispensable; for without this, we shall be liable, on the one hand, to the risk of imputing Atheism to many who are not justly chargeable with it--a fault which should be most carefully avoided;[3] and equally liable, on the other hand, to the danger of overlooking the wide gulf which separates Religion from Irreligion, and Theism from Atheism.

There is much room for the exercise both of Christian candor and of critical discrimination, in forming our estimate of the characters of men from the opinions which they hold, when these opinions relate not to the vital truths of religion, but to collateral topics, more or less directly connected with them.

It is eminently necessary, in treating this subject, to discriminate aright between systems which are essentially and avowedly atheistic, and those particular opinions on cognate topics which have sometimes been applied in support of Atheism, but which may, nevertheless, be held by some _salva fide_, and without conscious, still less avowed, Infidelity.