From this test, which at least in my browser has stupid text-changing-size effects.

1.  Mill   (100%) 
2.  Sartre   (92%) 
3.  Rand   (89%)  
4.  Kant   (86%)  
5.  Plato   (86%)  
6.  Stoics   (85%)  
7.  Epicureans   (76%)
8.  Hume   (76%)
9.  Prescriptivism   (76%) 
10.  Aristotle   (74%) 
11.  Spinoza   (74%)
12.  Aquinas   (67%)
13.  Hobbes   (65%)
14.  Nietzsche   (65%)
15.  Bentham   (58%)
16.  Noddings   (57%)
17.  Ockham   (52%)
18.  Augustine   (50%)
19.  Cynics   (44%)