"That no generally applicable law of the formulation and development of hybrids has yet been successfully formulated can hardly astonish anyone who is acquainted with the extent of the task and who can…"

"I have sown many seeds, but only a few have borne fruit."

"I have seen the future of biology, and it is in the numbers."

"The characters which are transmitted from the parents to the offspring are constant and definite."

"To live without experiencing some shame and blushes of admiration would surely be a wretched life."