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The rise of every man he loved to trace, Up to the very pod O! And, in baboons, our parent race Was found by old Monboddo. Their A, B, C, he made them speak, And learn their qui, quae, quod, O! Till Hebrew, Latin, Welsh, and Greek They knew as well's Monboddo!

Observe constantly that all things take place by change, and accustom thyself to consider that the nature of the Universe loves nothing so much as to change the things which are, and to make new things like them.

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

A fire-mist and a planet, A crystal and a cell, A jellyfish and a saurian, And caves where the cavemen dwell; Then a sense of law and beauty, And a face turned from the clod-- Some call it Evolution, And others call it God.

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.

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

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

Till o'er the wreck, emerging from the storm, Immortal Nature lifts her changeful form: Mounts from her funeral pyre on wings of flame, And soars and shines, another and the same.

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!"

A mighty stream of tendency.

Or ever the knightly years were gone With the old world to the grave, I was a king in Babylon And you were a Christian slave.

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.

We seem to exist in a hazardous time, Driftin' along here through space; Nobody knows just when we begun, Or how fur we've gone in the race.

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.

I was at Euphorbus at the siege of Troy.

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.

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.

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

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."

Out of the dusk a shadow, Then a spark; Out of the cloud a silence, Then a lark; Out of the heart a rapture, Then a pain; Out of the dead, cold ashes, Life again.