Science, already oppressive with its shocking revelations, will perhaps be the ultimate exterminator of our human species - if separate species we be - for its reserve of unguessed horrors could never be borne by mortal brains if loossed upon the world.

Certainly it seems that nature desires to exterminate the human race, as a thing useless to the world, and the destroyer of all created things.

The end of the human race will be that it will eventually die of civilization.

Life is a hideous thing, and from the background behind what we know of it peer daemoniacal hints of truth which make it sometimes a thousandfold more hideous. Science, already oppressive with its shocking revelations, will perhaps be the ultimate exterminator of our human species — if separate species we be — for its reserve of unguessed horrors could never be borne by mortal brains if loosed upon the world.

The white race seems destined to exterminate the blacks.

How much good it would do if one could exterminate the human race.

Someday science may have the existence of mankind in power, and the human race can commit suicide by blowing up the world.

If greater-than-human artificial general intelligence is invented without due caution, it is all but certain that the human species will be extinct in very short order.

You, your families, your friends and your countries are to be exterminated by the common decision of a few brutal but powerful men. To please these men, all the private affections, all the public hopes, all that has been achieved in art, and knowledge and thought and all that might be achieved hereafter is to be wiped out forever. Our ruined lifeless planet will continue for countless ages to circle aimlessly round the sun unredeemed by the joys and loves, the occasional wisdom and the power to create beauty which have given value to human life.

Mankind ought to end its existence of its own will.

The promotion of homosexuality may lead to the eventual destruction of the human race.

Robots of the world, you are ordered to exterminate the human race. Do not spare the men. Do not spare the women. Preserve only the factories, railroads, machines, mines, and raw materials. Destroy everything else. Then return to work. Work must not cease.

Our opinion is that war to the death should be instantly proclaimed against them. Every machine of every sort should be destroyed by the well-wisher of his species. Let there be no exceptions made, no quarter shown; let us at once go back to the primeval condition of the race. If it be urged that this is impossible under the present condition of human affairs, this at once proves that the mischief is already done, that our servitude has commenced in good earnest, that we have raised a race of beings whom it is beyond our power to destroy and that we are not only enslaved but are absolutely acquiescent in our bondage.

The development of full artificial intelligence could spell the end of the human race. We cannot quite know what will happen if a machine exceeds our own intelligence, so we can't know if we'll be infinitely helped by it, or ignored by it and sidelined, or conceivably destroyed by it.