Simplify the following text for a Grade 7 native English-speaking person.
Original: Kenneth Wayne `` Ken '' Dryden , PC , MP ( born August 8 , 1947 ) is a Canadian politician , lawyer , businessman , author , and former NHL goaltender .
Simplified: Ken Dryden is a retired NHL goaltender . Born in Hamilton , Ontario , on August 8 , 1947 , Dryden was originally drafted by the Boston Bruins in 1964 .