The whole problem with the world is that fools and fanatics are always so certain of themselves, and wiser people so full of doubts.

The whole problem with the world is that fools and fanatics are always so certain of themselves, but wiser people are full of doubts.

The whole problem with the world is that fools and fanatics are always so sure of themselves and wiser people so full of doubt.

The trouble with the world is that the stupid are cocksure and the intelligent are full of doubt.

The world is full of magical things patiently waiting for our wits to grow sharper.

Conventional people are roused to fury by departure from convention, largely because they regard such departure as a criticism of themselves.