Asa Gray Quotes

This substance, which is manifold in its forms and protean in its transformations, has, in its state of living matter, one physiological name which has become familiar, that of protoplasm.

- Asa Gray

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Substance | Manifold | Forms | Protean | Transformations |

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I am sufficiently convinced already that the members of a profession know their own calling better than anyone else can know it. - Asa Gray

It was implicitly supposed that every living thing was distinctively plant or animal; that there were real and profound differences between the two, if only they could be seized. - Asa Gray

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. - Asa Gray