Among the symbolic conceits in which the authors of the Brahmanas so freely indulge, there is one overshadowing all others - if indeed they do not all more or less enter into it - which may be considered as the sum and substance of these speculations, and the esoteric doctrine of the sacrifice, involved by the Brahmanical ritualists.
Schbnlein thus did something to introduce new and positive conceptions and exacter methods into Germany; but unfortunately his own mind retained the abstract habit of his country, and his abilities were dissipated in the mere speculations of Schelling.
To the work carried on by the Imperial Cancer Research Fund in England, and to investigators in other countries, are due the present day scientific efforts made to systematize investigation and clear away many of the hypothetical speculations that have gathered round this most difficult subject.
Among the Greeks and Romans various speculations as to the cause of the how were indulged in; Aristotle, in his Meteors, erroneously ascribes it to the reflection of the sun's rays by the rain; Seneca adopted the same view.
He also found time for philosophical speculations, and in 1830 he published his Inquiries concerning the Intellectual Powers of Man and the Investigation of Truth, which was followed in 1833 by a sequel, The Philosophy of the Moral Feelings.