Science rebukes certain thoughts by calling them morbid.

For example, some religious societies discouraged men more or less from thinking about sex.

The new scientific society definitely discourages men from thinking about death; it is a fact, but it is considered a morbid fact.

And in dealing with those whose morbidity has a touch of mania, modern science cares far less for pure logic than a dancing Dervish.

In these cases it is not enough that the unhappy man should desire truth; he must desire health.