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.

Pouter, tumbler, and fantail are from the same source;
The racer and hack may be traced to one Horse;
read more

Pouter, tumbler, and fantail are from the same source;
The racer and hack may be traced to one Horse;
So men were developed from monkeys of course,
Which nobody can deny.

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.

Is there evil but on earth? Or pain in every people sphere?
Well, be grateful for the sounding watchword read more

Is there evil but on earth? Or pain in every people sphere?
Well, be grateful for the sounding watchword "Evolution" here.

A mighty stream of tendency.

A mighty stream of tendency.

For my own part I am persuaded that everything advances by an
unchangeable law through the eternal constitution and read more

For my own part I am persuaded that everything advances by an
unchangeable law through the eternal constitution and association
of latent causes, which have been long before predestined.
[Lat., Equidem aeterna constitutione crediderim nexuque causarum
atentium et multo ante destinatarum suum quemque ordinem
immutabili lege percurrere.]

Evolution ever climbing after some ideal good
And Reversion ever dragging Evolution in the mud.

Evolution ever climbing after some ideal good
And Reversion ever dragging Evolution in the mud.

There was an ape in the days that were earlier,
Centuries passed and his hair became curlier;
read more

There was an ape in the days that were earlier,
Centuries passed and his hair became curlier;
Centuries more gave a thumb to his wrist--
Then he was a Man and a Positivist.

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!"