I suggest, then... that the first step was an advance under favor of peculiar conditions, from the simplest forms of being, to the next more complica… - Robert Chambers

The law of organic development is still daily seen at work to certain effects, only somewhat short of a transition from species to species.

The rise of each generation gives new ties towards the future, which insensibly dissolves those which bind us to the past; and the natural old age of the human race seems to have adjusted itself to that period beyond which the human being would feel isolated and desolate in the midst of the new objects of attachment which the progress of time brings into existence.

The elder Herschel, directing his wonderful tube towards the sides of our system, where stars are planted most rarely... was enabled with awe struck mind to see suspended in the vast empyrean astral systems, or, as he called them, firmaments, resembling our own. Like light cloudlets to a certain power of the telescope, they resolved themselves, under a greater power, into stars, though these generally seemed no larger than the finest particles of diamond dust. The general forms of these systems are various; but one at least has been detected as bearing a striking resemblance to the supposed form of our own. The distances are also various... The farthest observed by the astronomer were estimated by him as thirty-five thousand times more remote than Sirius, supposing its distance to be about twenty thousand millions of miles. It would thus appear, that not only does gravitation keep our earth in its place in the solar system, and the solar system in its place in our astral system, but it also may be presumed to have the mightier duty of preserving a local arrangement between that astral system and an immensity of others, through which the imagination is left to wander on and on without limit or stay, save that which is given by its inability to grasp the unbounded.