The natural pains and pleasures of life, merely manipulated by the imagination and the memory, have too little variety or magnitude in them without further aid.

Art without the moral sense to play upon, is like a pianist whose keyboard is reduced to a single octave.
And exactly the same will be the case with life.

Life will lose just the same qualities that art will--neither more nor less.

There will be no introduction of any new interests, but merely the elimination of certain existing ones.

The subtraction of the moral sense will not revolutionise human purposes, but simply make them listless.