Here is a man with an imagination so large that just ?by thinking on it,? he invented calculus and figured out the scientific explanation of gravity. Kathleen Krull presents a portrait of Isaac New…
Leonardo da Vinci’s notebooks are mind-boggling evidence of a fifteenth-century scientific genius standing at the edge of the modern world, basing his ideas on observation and experimentation. Th…
Kathleen Krull proves Sigmund Freud deserves a place in her much-lauded series, because he essentially created a brand-new branch of medicine: psychoanalysis.