Who's an intellectual, then?

The newspaper The Weekender asked its readers to nominate people they thought were "intellectuals". Are these the same group that the Russians call the "intelligentsia"?

In any case, they received 148 nominations from their readers. Some of the nominations were rather dubious, but I was interested to see that the three that received the most nominations were:

1. Mamphela Ramphele - 31 nominations
2. Jonathan Jansen - 16 nominations
3. Mary Metcalfe - 8 nominations

And I think I agree with those three.

Some of the others may be, but I suspect that some were nominated out of political or religious loyalty.

Can anyone suggest any others, either on The Weekender's list, or others not mentioned?