2 ideas from Jacob Grimm, each explained in a minute and credited to the original work. Free on Savvy.
Jacob Grimm — yes, of Grimm's Fairy Tales — built on Rasmus Rask's earlier findings and in 1822 systematised a wholesale pattern of consonant shifts separating the Germanic languag…
— Jacob Grimm, Deutsche Grammatik
Jacob Grimm, better known for collecting fairy tales with his brother, noticed in 1822 that certain consonants shift in predictable ways between related language families: Latin 'p…
— Jacob Grimm, Deutsche Grammatik