"The relation between modern civilized life and insanity cannot be regarded as finally determined while a marked difference of opinion exists in regard to it among those who have studied the subject; nor can this difference be wondered at by anyone who has examined the data upon which a conclusion must be formed, and has found how difficult it is to decide in which direction some of the evidence points. Statistics alone may prove utterly fallacious. Mere speculation, on the other hand, is useless, and indeed is only misleading. It is a matter on which it is tempting to write dogmatically, but where the honest inquirer is quickly pulled up by the hard facts that force themselves on his attention. Nothing easier than to indulge in unqualified denunciations of modern society; nothing more difficult than a cautious attempt to connect the social evils of the present day with the statistics of lunacy. Nothing easier than to make sweeping statements without proof, nothing more difficult than to apportion the mental injury respectively caused by opposite modes of life; totally diverse social states of a nation often leading to the same termination: insanity..."