My interactions with Sorkin were agonisingly weird. He is by far the weirdest person I have ever met. I had dinner with him and a few hours before I got an e-mail from his assistant saying 'Sean this does not need to be a long conversation. Aaron is only going to use it to win your trust.'

We've become much more casual and much more relaxed in social interactions where there was a formality and maybe a kind of respect at that time that doesn't exist now.

There are tens of thousands of interactions every single day across Afghanistan between the Afghan troops and International Security Assistance Force. On most of those every single day we continue to deepen and broaden the relationship we seek.

The exercise of power is determined by thousands of interactions between the world of the powerful and that of the powerless all the more so because these worlds are never divided by a sharp line: everyone has a small part of himself in both.

Looking ahead future generations may learn their social skills from robots in the first place. The cute yellow Keepon robot from Carnegie Mellon University has shown the ability to facilitate social interactions with autistic children. Morphy at the University of Washington happily teaches gestures to children by demonstration.

It is important to consider whether the sample size selected by the Environmental Genome Project will provide sufficient power to discover most alleles relevant to gene-environment interactions.

Interactions between fathers and children are the starting point of education.

Absolutely lonely people have few personal interactions of any kind.