Analysis of information sources in references of the Wikipedia article "Modern synthesis (20th century)" in English language version.
I may predict with some certainty that before long we shall find the original Darwinism of Dr. Erasmus Darwin … generally accepted instead of the neo-Darwinism of to-day, and that the variations whose accumulation results in species will be recognised as due to the wants and endeavours of the living forms in which they appear, instead of being ascribed to chance, or, in other words, to unknown causes, as by Mr. Charles Darwin's system