Occasionally there would be something I didn’t recognise and I’d record it with a question mark or, as a joke, LGM for Little Green Men. It was easier than saying “you know that funny pulsing source at right ascension 1919, declination plus 20”. So, it became LGM.

We spent some time in our family talking about what's the trade-off we want to make. We ended up talking a lot about design, but also about the values of our family. Did we care most about getting our wash done in an hour versus an hour and a half? Or did we care most about our clothes feeling really soft and lasting longer? Did we care about using a quarter of the water? We spent about two weeks talking about this every night at the dinner table.

I love going to the tip. A friend reassured me once that if I ever get cancelled, I’ll still have the tip, and she was absolutely right. Even Britney Spears has the tip! It’s never going anywhere, and that’s a nice thought.

The great singer Um Kulthum (actually named Kawkab Elsharq – a superstar of the East) had a major influence on my appreciation of music. On the first Thursday of each month we listened to Um Kulthum's concert – "waslats" (three songs) – for more than three hours. During all of my study years in Egypt, the music of this unique figure gave me a special happiness, and her voice was often in the background while I was studying mathematics, chemistry… etc. After three decades I still have the same feeling and passion for her music.

If you ask me where has been the one area where I feel that I've been most frustrated and most stymied it is the fact that the United States of America is the one advanced nation on earth in which we do not have sufficient common-sense, gun-safety laws. Even in the face of repeated mass killings. … And for us not to be able to resolve that issue has been something that is distressing. But it is not something that I intend to stop working on in the remaining 18 months.

I deeply regret not having learned a musical instrument. And I regret not having focused more on Spanish when I was studying it in school. I would love to be able to speak Spanish fluently and play an instrument.

Sometimes I wrote off my own failings as just another example of the world trying to keep a black man down. I had a tendency sometimes to make excuses for me not doing the right thing.

When I am on my deathbed, and I am thinking back on my life, I am absolutely certain that the thing I will be thinking about is holding my daughters' hands and taking them to the park. It will not be some speech I gave or some legislation that I passed. I am positive about that. And so if you keep that in mind, then you have to invest accordingly.

The thing actually that I most dislike is cruelty. I can't stand cruel people. And if I see people doing something mean to somebody else, just to make themselves feel important it really gets me mad.

Scooping ice cream is tougher than it looks. … Rows and rows of rock-hard ice cream can be brutal on the wrists. … I was less interested in what the job meant for my future and more concerned about what it meant for my jump shot.