"The modern origins of empirical scientific knowledge lie in the sixteenth and seventeenth centuries. This time period…"

"Perhaps there is no literature in Europe that mirrors so clearly as the Portuguese, the painful conflict in the minds…"

"Concerning ourselves we speak not; but as touching the matter which we have in hand, this we ask;—that men deem it no…"

"[L]ong ago have those doctrines been exploded of the Force of the First Mover and the Solidity of the Heaven,—the sta…"

"Though Lavoisier generally gets credit for the authorship of this principle [ conservation of mass ], others had conc…"

"In Newton's time only two kinds of force were available for quantitative investigation. One was the force of gravity;…"

"During medieval times, men accepted Ptolemy's view that the earth was the natural center of the universe. ...[A]dapti…"

"The credit of first using the telescope for astronomical purposes is almost invariably attributed to Galilei, though …"

"Let me close by reminding you of what Newton actually did on the day that he conceived G = k \frac{mm'}{r^2}. ...Newt…"

"Galileo had the experience of beholding the heavens as they actually are for perhaps the first time, and wherever he …"