William Harvey — "The semen is the efficient cause and the egg the material cause of generation."
The semen is the efficient cause and the egg the material cause of generation.
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More from William Harvey
"It is not wealth or ancestry, but rather the spirit of the age, which has raised me to the highest pinnacle of fame."
"Truth is the daughter of time, not of authority."
"The study of nature is the study of God."
"I have not only affirmed, but also demonstrated, the circulation of the blood."
"It is not simply by chance that the heart is placed in the midst of the body, as if it were the sun of the microcosm."