6
3
4
1
4
7
9
2
3
4
8
5
3
6
5
2
4
8
1
5
2
8
6
6
4
8
4
1
7
6
3
5
2
6
"The roots of education are bitter, but the fruit is sweet." — Aristotle
"The roots of education are bitter, but the fruit is sweet." — Aristotle
"The essence of mathematics lies in its freedom." — Georg Cantor
"The essence of mathematics lies in its freedom." — Georg Cantor