Phrase by 'Asa Gray'
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There is a class, moreover, by whom all these scientific theories, and more are held as ascertained facts, and as the basis of philosophical inferences which strike at the root of theistic beliefs.
Author: Asa Gray - American ScientistMore , Class , Strike , Facts
Many years ago it was taught that plants and animals were composed of different materials: plants, of a chemical substance of three elements,- carbon, hydrogen, and oxygen; animals of one of four elements, nitrogen being added to the other three.
Author: Asa Gray - American ScientistBeing , Three , Plants , Animals
We may take it to be the accepted idea that the Mosaic books were not handed down to us for our instruction in scientific knowledge, and that it is our duty to ground our scientific beliefs upon observation and inference, unmixed with considerations of a different order.
Author: Asa Gray - American ScientistKnowledge , Down , Us , Duty
I proceed with the proper subject of this discourse; namely, the further changes in scientific belief, which have occurred within my own recollection, even since the time when I first aspired to authorship, now forty- five years ago.
Author: Asa Gray - American ScientistTime , Own , My Own , Changes
I am sufficiently convinced already that the members of a profession know their own calling better than anyone else can know it.
Author: Asa Gray - American ScientistKnow , Own , I Am , Better
Indeed upon much that may have to say, I expect rather the charitable judgment than the full assent of those whose approbation I could most wish to win.
Author: Asa Gray - American ScientistSay , Wish , Win , Expect
I take it for granted that you do not wish to hear an echo from the pulpit nor from the theological class-room.
Author: Asa Gray - American ScientistYou , Wish , Take , Hear , Echo
I accept extinction as best explaining disjoined species. I see that the same cause must have reduced many species of great range to small, and that it may have reduced large genera to so small, and of families.
Author: Asa Gray - American ScientistSee , Best , Great , Small
Why is it not just as likely that there were as many small general nearly at first as now, and as great a disproportion in the number of their species?
Author: Asa Gray - American ScientistWhy , Great , Now , Small
Is it philosophical, is it quite allowable, to assume without evidence from fossil plants that the family or any of the genera was once larger and wide spread? and occupied a continuous area?
Author: Asa Gray - American ScientistFamily , Plants , Without , Spread