The germs of rational thinking among the higher apes, and the limited use of tools by some animals, have remained at a beginning stage, while reaching fruition only in human beings.
(The germs of rational thinking among the higher apes, and the limited use of tools by some animals; have remained; at a beginning stage; T:while reaching fruition only in human beings)
The germs of rational thinking among the higher apes, and the limited use of tools by some animals
have remained
at a beginning stage T:while reaching fruition only in human beings