Therefore, you might suppose that to be a professional tech investor--one who bets huge in up markets and coolly bails out at the start of down markets--well, such a superman must be more than an optimist and futurist.

FORBES: Tech Stocks at a Crossroads

You have to be something of an optimist to believe that governments which can tax more easily will also tax more lightly.

ECONOMIST: Mario Monti, Europe��s taxman-in-chief

He is an optimist and believes that "Kenyans will emerge from these elections more united".

BBC: Jane Waruguru