Why did Grigori Perelman refuse his $ 1 million award?

Why did Grigori Perelman refuse his $ 1 million award?

The famous Russian mathematician Grigori Perelman, who declined a $1 million prize. This money was awarded to Perelman for solving a conjecture which minds had puzzled over for more than a millennium. Why did the mathematician refuse the prize, preferring a modest life? Find the answer in our video.