Price of thoughts

Record sum for Voltaire letters.
"A European collector has paid $750,000 (£400,000) for 26 letters sent by the French philosopher Voltaire to the Russian Empress Catherine the Great. The letters were all sent between 1768 and 1777. Catherine often described herself to others as ‘the philosopher on the throne’. Many of the letters were signed by Voltaire as ‘The Old Hermit.’ "

Thought, Art and many other things, can exchange it's worth more than gold, to think if in the early days it've been sold, the creator's value would've never been mould.