Although his surviving works amount to some 3 million words , this is thought to represent less than a third of his complete writings .
Galen may have written as many as 500 treatises , amounting to some 10 million words .
Although Galen 's surviving works amount to some 3 million words , this is thought to represent less than a third of his complete writings .
Galen may have written as many as 500 treatises , amounting to some 10 million words .