6
2
1
9
6
3
8
5
7
5
2
1
9
7
6
8
9
9
4
6
1
2
5
4
9
6
8
1
5
5
7
4
"Energy and persistence conquer all things." — Benjamin Franklin
"Energy and persistence conquer all things." — Benjamin Franklin
"Mathematics knows no races or geographic boundaries; for mathematics, the cultural world is one country." — David Hilbert
"Mathematics knows no races or geographic boundaries; for mathematics, the cultural world is one country." — David Hilbert