Quote of the day
You do what you can for as long as you can, and when you finally can't, you do the next best thing. You back up but you don't give up.
Felix Klein
Born: April 25, 1849
Died: June 22, 1925 (aged 76)
Bio: Christian Felix Klein was a German mathematician and mathematics educator, known for his work in group theory, complex analysis, non-Euclidean geometry, and on the connections between geometry and group theory.
Known for:
- The Theory of the Top
- Famous problems of elementary geometry (1897)







