Isaac Watts Quotes
When general observations are drawn from so many particulars as to become certain and indisputable, these are jewels of knowledge.
Watts, Isaac. The Improvement of the Mind. James Brackstone, 1741, p. 64.
Proof in a scientific and mathematical context is very different from the legal concept of proof. For Feynman, proof consisted of both being able to deduce a statement in much the same way as a proof is offered in plane geometry and being able to construct an experiment which will demonstrate the validity (confirm the prediction of what will happen all cases. As a theoretical physicist, most of his proofs were of the mathematical, deductive kind. There are many phenomena in mathematics and science that were, and are, known long before someone was able to offer a proof.
Isaac Watts was an English Christian minister (Congregational), hymn writer, theologian, and logician. He was a prolific and popular hymn writer and is credited with some 750 hymns. He is recognized as the "Godfather of English Hymnody"; many of his hymns remain in use today and have been translated into numerous languages.