Quote by August Weismann

"The struggle for existence holds as much in the future as it has held in the past."

"Natural selection is the only true guiding force in the development of organic life."

"Evolution is not a theory of chance, but of necessity."

"The continuity of the germ-plasm is the key to understanding heredity."

"Science helps us understand the world."

"I've witnessed the birth of science, and it continues to amaze me."

"I'm something of a scientist myself."

"The fusion process is self-sustaining now!"