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."

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!"

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.

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.

The further the spiritual evolution of mankind advances, the more certain it seems to me that the path to genuine read more

The further the spiritual evolution of mankind advances, the more certain it seems to me that the path to genuine religiosity does not lie through the fear of life, and the fear of death, and blind faith, but through striving after rational knowledge.

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.]

The evolution of the brain not only overshot the needs of prehistoric man, it is the only example of evolution read more

The evolution of the brain not only overshot the needs of prehistoric man, it is the only example of evolution providing a species with an organ which it does not know how to use

A mighty stream of tendency.

A mighty stream of tendency.

When I was a shepherd on the plains of Assyria.

When I was a shepherd on the plains of Assyria.