In the first place, happiness, like every other emotional state, has blindness and insensibility to opposing facts given it as its instinctive weapon for self‐protection against disturbance. When happiness is actually in possession, the thought of evil can no more acquire the feeling of reality than the thought of good can gain reality when melancholy rules. To the man actively happy, from whatever cause, evil simply cannot then and there be believed in. He must ignore it; and to the bystander he may then seem perversely to shut his eyes to it and hush it up. But more than this: the hushing of it up may, in a perfectly candid and honest mind, grow into a deliberate religious policy, or _parti pris_. Much of what we call evil is due entirely to the way men take the phenomenon. It can so often be converted into a bracing and tonic good by a simple change of the sufferer’s inner attitude from one of fear to one of fight; its sting so often departs and turns into a relish when, after vainly seeking to shun it, we agree to face about and bear it cheerfully, that a man is simply bound in honor, with reference to many of the facts that seem at first to disconcert his peace, to adopt this way of escape. Refuse to admit their badness; despise their power; ignore their presence; turn your attention the other way; and so far as you yourself are concerned at any rate, though the facts may still exist, their evil character exists no longer. Since you make them evil or good by your own thoughts about them, it is the ruling of your thoughts which proves to be your principal concern. The deliberate adoption of an optimistic turn of mind thus makes its entrance into philosophy. And once in, it is hard to trace its lawful bounds. Not only does the human instinct for happiness, bent on self‐ protection by ignoring, keep working in its favor, but higher inner ideals have weighty words to say. The attitude of unhappiness is not only painful, it is mean and ugly. What can be more base and unworthy than the pining, puling, mumping mood, no matter by what outward ills it may have been engendered? What is more injurious to others? What less helpful as a way out of the difficulty? It but fastens and perpetuates the trouble which occasioned it, and increases the total evil of the situation. At all costs, then, we ought to reduce the sway of that mood; we ought to scout it in ourselves and others, and never show it tolerance. But it is impossible to carry on this discipline in the subjective sphere without zealously emphasizing the brighter and minimizing the darker aspects of the objective sphere of things at the same time. And thus our resolution not to indulge in misery, beginning at a comparatively small point within ourselves, may not stop until it has brought the entire frame of reality under a systematic conception optimistic enough to be congenial with its needs.