| BRONOWSKI | Jacob ___, mathematician and philosopher born in Poland in 1908 (9) |
| DIRAC | Paul ___, mathematician and theoretical physicist (5) |
| MAZURKA | Lively dance originating in Poland in the early 19th century (7) |
| AUROCHS | Extinct member of the cattle tribe also called urus, the last specimen of which is believed to have died in Poland in 1627 (7) |
| CONFUCIUS | Ancient Chinese philosopher born in 551 BC (9) |
| WEININGER | Otto ********* , Austrian philosopher born in 1880 (9) |
| NACHMANIDES | Medieval Jewish scholar and philosopher born in Girona in 1194 (11) |
| RAND | Ayn ___, Russian-born writer and philosopher born in 1905 (4) |
| DESCARTES | René —, French mathematician and philosopher |
| CHWISTEK | Leon _, Polish painter and philosopher born in 1884 (8) |
| ANSELM | Saint and philosopher born in 11th-century Italy whose feast day is the 21st of April (6) |
| EPICTETUS | Stoic philosopher born a slave whose discourses were transcribed and compiled by his pupil Arrian (9) |
| ARISTOTLE | Greek philosopher born 384 BC, tutor to Alexander the Great (9) |
| ABELARD | Peter, French theologian and philosopher born around 1079 (7) |
| HIPPOCRATES | Physician and philosopher born around 460BCE, whose school established medicine as a profession (11) |
| LOCKE | English philosopher born in Wrington, Somerset in 1632 (5) |
| KARLPOPPER | Philosopher born in Vienna in 1902 last to talk with unusually proper pal (4,6) |
| BARUCH | ****** Spinoza, philosopher born in Amsterdam in 1632 (6) |
| HUME | Enlightenment philosopher born in Edinburgh in 1711 |
| NOAM | **** Chomsky, activist and linguistics philosopher born in 1928 (4) |
