A theory is nothing but the generalization of particular facts; and, in a theory of the earth, those facts must be taken from the observations of natural history.


Theory of the Earth: With Proofs and Illustrations (Volume 1), Chapter III (p. 297)


A theory is nothing but the generalization of particular facts; and, in a theory of the earth, those facts must be taken from the observations of...

A theory is nothing but the generalization of particular facts; and, in a theory of the earth, those facts must be taken from the observations of...

A theory is nothing but the generalization of particular facts; and, in a theory of the earth, those facts must be taken from the observations of...

A theory is nothing but the generalization of particular facts; and, in a theory of the earth, those facts must be taken from the observations of...