8
4
7
1
4
2
5
8
9
3
6
1
1
8
2
7
3
6
3
7
5
8
9
4
7
8
3
6
6
1
5
8
1
4
3
8
6
"I was taught that the way of progress was neither swift nor easy." — Marie Curie
"I was taught that the way of progress was neither swift nor easy." — Marie Curie
"A theory that is not refutable by any conceivable event is non-scientific." — Karl Popper
"A theory that is not refutable by any conceivable event is non-scientific." — Karl Popper