Directing was rarely a thought in my head growing up. Especially not when I first began acting or working on my first professional sets.

That's the cool thing about relationships. You're relating to someone else. It's another thing to balance who you are off of.

I think social media has a lot of negative impact and negative effects. These are fairly extreme and horrifying and really gruesome.

I would say one of the most romantic things I've done is I've taken a girlfriend back to her hometown when she hadn't been back for years. It was in Puerto Rico, and we stayed there for about a week and a half. She showed me the different places she grew up around.

In the late 1970s, when I was a professor at Caltech, I pioneered four instruments for analyzing genes and proteins that revolutionized modern biology - and one of these, the automated DNA sequencer, enabled the Human Genome Project.

Modern scientific knowledge appeared piecemeal. Historians wrote about human history; physicists tackled the material world; and biologists studied the world of living organisms. But there were few links between these disciplines, as researchers focused on getting the details right.

Presented with the claims of nineteenth-century racist anthropology, a rational person will ask two sorts of questions: 'What is the scientific status of the claims?' 'What social or ideological needs do they serve?'

The most pressing ethical question is to make sure that everything you do from a scientific standpoint is done for the ultimate good and positive issue for the people that you're caring about.