If the disease which has attacked the brain goes on increasing, the mental disease which follows as a consequence of organic disturbance or deterioration, will have increased also, until insanity may be established in some one or more of its many sad and varied forms.
INSANITY.
It is, therefore, a very serious thing for a man to take into his body any substance which, on reaching that wonderfully delicate organ--the brain, sets up therein a diseased action; for, diseased mental action is sure to follow, and there is only one true name for mental disease, and that is _insanity_.

A fever is a fever, whether it be light or intensely burning; and so any disturbance of the mind's rational equipoise is insanity, whether it be in the simplest form of temporary obscurity, or in the midnight of a totally darkened intellect.
We are not writing in the interest of any special theory, nor in the spirit of partisanship; but with an earnest desire to make the truth appear.

The reader must not accept anything simply because we say it, but because he sees it to be true.

Now, as to this matter of insanity, let him think calmly.

The word is one that gives us a shock; and, as we hear it, we almost involuntarily thank God for the good gift of a well-balanced mind.