It is said in reply: "We do know the origin of those developments which you refer to a supposed intelligence. The living beings are transformed by the action of food, climate, soil, mode of life. They experience slight variations in the first instance; but these variations are established, and increase; and where you see a plan, types, and species, there is really only the result of modifications slowly accumulated. Nature disposes of periods which have no limit, and everything has come at its proper time, in the course of ages." They are always proposing to us to accept of time as the substitute for intelligence. I am tempted to say with Alcestis: Time in this matter, Sirs, has nought to do.[127] You know what intelligence is; you know it by knowing yourself. Is there, or is there not, intelligence in the universe? Allow me to reproduce some old questions: If a machine implies intelligence, does the universe imply none? If a telescope implies intelligence in the optician, does the eye imply none in its author? The production of a variety of the camelia, or of a new breed of swine, demands of the gardener and the breeder the patient and prolonged employment of the understanding; and are our entire flora and fauna to be explained without any intervention of mind? And if there is intelligence in the universe, is this intelligence a chemical result of the combination of molecules? is it a physical result of caloric or of electricity? It is in vain that you give to material agents an unlimited time; what has time to do here? Whether the world as it now exists arose out of nothing, or whether it was slowly formed during thousands of ages, the question remains the same. With matter and time, you will not succeed in creating intelligence; this were an operation of transcendent alchemy utterly beyond our power. In the theory of _slow causes_, the adjective ends by devouring the substantive; it seems that by dint of becoming slow the causes become superfluous. A breath of reason upsets, like a house of cards, the structures of this erring and misnamed science. Time has a relative meaning and value. We reckon duration as long or short, by taking human life as our measure. But they tell of insects which are born in the morning, arrive at mature age at mid-day, and only reach the evening if they are patriarchs of their race. Is it not easy to conceive of beings organized for an existence such that our centuries would be moments with them, and centuries heaped together one of our hours? Suppose one of these beings to be contemplating our geological periods, and slow causes will to him appear rapid causes, and the question of intelligence will be the same for him as for us.