Did Newton declare that he had never lost a single drop of his seminal fluid? This book A Mind of Its Own: A Cultural History of the Penis contains the following sentence: > Isaac Newton supposedly “never lost a single drop of seminal fluid. And in Everybody's Own Physician; Or, How to Acquire and Preserve Health ...: > Newton declared that he had never lost a single drop of his seminal fluid in all ... Did he say that?

This claim is analyzed in the 1897 What a Young Man Ought to Know:

> the statement made by quacks, that in his closing years Sir Isaac Newton affirmed that never in his entire life had he lost a single drop of sexual fluid cannot be sufficiently substantiated to make the statement credible even in this given instance. Indeed, we would feel perfectly safe in offering a thousand dollars for positive proof that Sir Isaac Newton ever made such an absurd statement.