It was always understood that plants and animals, though completely contrasted in their higher representatives, approached each other very closely in…

- Asa Gray

We have spoken of beings so low in the scale that the individuals throughout their whole existence are not sufficiently specialized to be distinctive…

- Asa Gray

We have really, that I know of, no philosophical basis for high and low. Moreover, the vegetable kingdom does not culminate, as the animal kingdom do…

- Asa Gray

In short, the animal and vegetable lines, diverging widely above, join below in a loop.

- Asa Gray

Yes, it is true that there are times when you do wonder if things are worth it but usually those moments pass as soon as they have come.

- Asa Gray

This view, as a rounded whole and in all its essential elements, has very recently disappeared from science. It died a royal death with Agassiz.

- Asa Gray

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 …

- Asa Gray

Next it was found that it was physiologically and structurally the same in the plant, that it was the living part of the plant, that which manifested…

- Asa Gray

Natural selection is not the wind which propels the vessel, but the rudder which, by friction, now on this side and now on that, shapes the course.

- Asa Gray