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.]

Children, behold the Chimpanzee;
He sits on the ancestral tree
From which we sprang in ages gone.
read more

Children, behold the Chimpanzee;
He sits on the ancestral tree
From which we sprang in ages gone.
I'm glad we sprang: had we held on,
We might, for aught that I can say,
Be horrid Chimpanzees to-day.

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.

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.

Civilization is a progress from an indefinite, incoherent
homogeneity toward a definite, coherent heterogeneity.

Civilization is a progress from an indefinite, incoherent
homogeneity toward a definite, coherent heterogeneity.

Today, the theory of evolution is an accepted fact for everyone but a fundamentalist minority, whose objections are based not read more

Today, the theory of evolution is an accepted fact for everyone but a fundamentalist minority, whose objections are based not on reasoning but on doctrinaire adherence to religious principles

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."

When you were a tadpole, and I was a fish,
In the Palaeozoic time,
And side by read more

When you were a tadpole, and I was a fish,
In the Palaeozoic time,
And side by side in the sluggish tide
We sprawled in the ooze and slime.

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!"