21 April: today's birthdays

• Billy Bitzer - American film director and photographer
• Percy Williams Bridgman - American physicist, Nobel Prize in Physics 1946
• Charlotte Brontë - English writer. She is the sister of Emily Brontë and Anne Brontë. Her main work is Jane Eyre.
• Friedrich Wilhelm August Fröbel - German pedagogist
• Andie MacDowell - American actress
• James McAvoy - Scottish actor
• Anton Sminck van Pitloo - Dutch painter
• Iggy Pop - Stage name of American singer and musician James Newell Osterberg
• Michel Rolle - French mathematician mainly known for the Rolle's theorem
• Carl Stumpf - German philosopher and psychologist
• Hippolyte Taine - French critic and historian
• Max Weber - German sociologist, economist and philosopher