"We are raised to honor all the wrong explorers and discoverers--thieves planting flags, murderers carrying crosses. Let us at last praise the colonizers of dreams."
--Peter S. Beagle
It's hard to imagine the significance of what he did - it was truly unique in the annals of all human history.
I know someone who met him a year or so ago, said he was the nicest and most humble guy imaginable, and genuinely still interested in what modern science is achieving.