Doing OK dad, poor dad

My father just turned 65 and would like to retire someday. I've been trying to talk him into buying some precious metals with his six figure retirement nest egg and he seems somewhat interested but hasn't actually bought any. I'm terrified for him. I bought PMs with the funds I have avaiable (a few thousand dollars) -- all my retirement money is locked up in a 401K with no ability to borrow for a couple months. So I can't really help him out financially in the event of a collapse.

Any suggestions on getting him to buy PMs?