Three classes of 'the erring philosophers'

BookValue
Extraordinary Popular Delusions and the Madness of Crowds
Charles MacKay
( http://www.randomhouse.com/ )

Study of presumption

It is happy for man that he does not know what the morrow is to bring forth, but, unaware of this great blessing, he has, in all ages of the world, presumptuously endeavoured to trace the events of unborn centuries, and anticipate the march of time, rues Charles MacKay in Extraordinary Popular Delusions and the Madness of Crowds.

More