Dad and Newton

What is the key likeness, besides being a man, between daddy and Sir Newton?

Well, disregard things that were not made known to me, or those that I don't want to make a guess... both of them were hit by Apple on the head.

ps Daddy wants an iPhone
ps2 He now uses bean's nano on plane (while he had been insisting to bring his discman and big head-/ear-phones for better music quality for ages)
ps3 Time to buy Apple's stock though it's up 50%+ this year...?