The expression often used by Mr. Herbert Spencer of the Survival
of the Fittest is more accurate, and is read more

The expression often used by Mr. Herbert Spencer of the Survival
of the Fittest is more accurate, and is sometimes equally
convenient.

Most species do their own evolving, making it up as they go along, which is the way Nature intended. And read more

Most species do their own evolving, making it up as they go along, which is the way Nature intended. And this is all very natural and organic and in tune with mysterious cycles of the cosmos, which believes that there’s nothing like millions of years of really frustrating trial and error to give a species moral fiber and, in some cases, backbone.

While the rest of the species is descended from apes, redheads are descended from cats.

While the rest of the species is descended from apes, redheads are descended from cats.

All evolution in thought and conduct must at first appear as heresy and misconduct.

All evolution in thought and conduct must at first appear as heresy and misconduct.

I have called this principle, by which, each slight variation, if
useful, is preserved, by the term of Natural read more

I have called this principle, by which, each slight variation, if
useful, is preserved, by the term of Natural Selection.

The stream of tendency in which all things seek to fulfill the
law of their being.

The stream of tendency in which all things seek to fulfill the
law of their being.

A mighty stream of tendency.

A mighty stream of tendency.

Said the little Eohippus,
"I am going to be a horse,
And on my middle fingernails
read more

Said the little Eohippus,
"I am going to be a horse,
And on my middle fingernails
To run my earthly course!
. . . .
I'm going to have a flowing tail!
I'm going to have a mane!
I'm going to stand fourteen hands high
On the Psychozoic plain!"

This survival of the fittest, which I have here sought to express
in mechanical terms, is that which Mr. read more

This survival of the fittest, which I have here sought to express
in mechanical terms, is that which Mr. Darwin has called "natural
selection, or the preservation of favoured races in the struggle
for life."