Lines by Baruch Spinoza
Baruch Spinoza
Dutch philosopher · 1632–1677
Baruch Spinoza ground lenses for a living and wrote philosophy in Latin. His Ethics, published after his death, is set out like a book of geometry.
But all things excellent are as difficult as they are rare.
Sed omnia praeclara tam difficilia, quam rara sunt.
Ethics, Part V, Proposition XLII, scholium
Tr. R. H. M. Elwes, 1883 · Public domain · Source (opens the digitised edition in a new tab)