Quote by Bertrand Russell
"The whole problem with the world is that fools and fanatics are always so certain of themselves, and wise people so full of doubts."
More from Bertrand Russell
"Do not fear to be eccentric in opinion, for every opinion now accepted was once eccentric."
"The fundamental cause of trouble in the world today is that the stupid are cocksure while the intelligent are full of doubt."
"What is wanted is not the will to believe, but the wish to find out, which is the exact opposite of the will to believe."
"The only thing that will redeem mankind is cooperation."