“Good God!” he thought.  “Am I going to pieces?  If I let this wretch, this criminal die, I save four people.  If I let her live, I ruin their lives.  The life of a man of brain and pride and heart; the life of a woman of beauty and intellect and honor; the lives of two children of unknown potentialities, for whom the world has now a warm heart.  ’The greatest good of the greatest number’—­the principle that governs civil law.  Has not even the worthy individual been sacrificed to it again and again?  Does it not hang the criminal dangerous to the community?  And is that called murder?  What am I at this moment but law epitomized?  Shall I hesitate?  My God, am I hesitating?  Conscience—­is it that?  A superfluous instinct transmitted by my ancestors and coddled by a woman—­is it that which has sprung from its grave, rattling its bones? ’Conscience makes’—­oh, shame that I should succumb when so much is at stake—­that I should hesitate when the welfare of four human beings trembles in the balance! ’Conscience’—­that in the moment of my supreme power I should falter!”

He returned to the woman.  He reached his finger toward her pulse, then hurriedly withdrew it and resumed his restless march.

“This is only a nightmare, born of the night and the horrible stillness.  To-morrow in the world of men it will be forgotten, and I shall rejoice....  But there will be recurring hours of stillness, of solitude.  Will this night repeat itself?  Will that thing on the bed haunt me?  Will that cry shriek in my ears?  Oh, shame on my selfishness!  What am I thinking of?  To let that base, degraded wretch exist, that I may live peaceably with my conscience?  To let four others go to their ruin, that I may escape a few hours of torment?  That I—­I—­should come to this!  ‘The greatest good of the greatest number.  The greatest’ ...  ’Conscience makes cowards of us all!’”

To his unutterable self-contempt and terror, he found his will for once powerless to control the work of the generations that had preceded him.  His iron jaw worked spasmodically, his gray eyes looked frozen.  The marble pallor of his face was suffused with a tinge of green.

“I despise myself!” he exclaimed, with fierce emphasis.  “I loathe myself!  I will not yield! ’Conscience’—­they shall be saved, and by me. ’The greatest’—­I will maintain my intellectual supremacy—­that, if nothing else.  She shall die!”

He halted abruptly.  Perhaps she was already dead.  Then he could reach the door in a bound and run down-stairs and out of the house.  To be followed...

He ran to the bed.  The woman still breathed faintly, her mouth was twisted into a sardonic and pertinent expression.  His hand sought his pocket and brought forth a case.  He opened it and stared at the hypodermic syringe.  His trembling fingers closed about it and moved toward the woman.  Then, with an effort so violent he fancied he could hear his tense muscles creak, he straightened himself and turned his back upon the bed.  At the same moment he dropped the instrument to the floor and set his heel upon it.