The Purple Sky

I once met an old man at the clinic.
He's 61, a father of 4, an accountant retiree, and he has Parkinson's Disease.
His memory is deteriorating by day.
He can't remember his address, let alone his wife's birthday.

When asked whether he feels sad, he said;

I have my wife, I have my kids.
How can I ever feel sad?

And they say true love is for eternity.