We are ignorant of the laws of variety-production; but we see it going on as a principle in nature, and it is obviously favorable to the supposition … - Robert Chambers

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.

This statistical regularity in moral affairs fully establishes their being under the presidency of law. Man is now seen to be an enigma only as an individual; in the mass he is a mathematical problem. It is hardly necessary to say, much less to argue, that mental action, being proved to be under law, passes at once into the category of natural things. Its old metaphysical character vanishes in a moment, and the distinction usually taken between physical and moral is annulled, as only an error in terms. This view agrees with what all observation teaches, that mental phenomena flow directly from the brain.

A sensible parallax of about one second has been ascertained in the case of the double star [ Alpha Centauri ] of the constellation of the Centaur, and one of the third of that amount for the double star, 61 Cygni; which gave reason to presume that the distance of the former might be about twenty thousand millions of miles, and the latter of much greater amount. If we suppose that similar intervals exist between all the stars, we shall readily see that the space occupied by even the comparatively small number visible to the naked eye, must be vast beyond all powers of conception.