In spite of the errors into which I may have been led, the work may possibly contain ideas and arguments that will have a certain value for the advancement of knowledge, until such time as the great subjects, with which I have ventured to deal, are treated anew by men capable of shedding further light upon them.

Translated by Hugh Elliot, Zoological Philosophy: An Exposition with Regard to the Natural History of Animals, Chapter VIII (p. 405)