Don’t sit down in the middle of the woods. If you’re lost in the plot or blocked, retrace your steps to where you went wrong. Then take the other road. And/or change the person. Change the tense. Change the opening page.

First of all, you learn to manage stress. You learn to live with stress. I mean, stress is there all the time. There’s no question about it. It’s in the morning. It’s at night. It’s at 3:00 in the morning, but you need to learn how to manage stress. Sometimes it’s more difficult than others, but you try to distract yourself. Whenever I have the chance, I like to go and have a round of golf. I have a passion for modern art. I have a passion for antique carpets, classical music. To me, these are distractions, and sometimes my wife, she think I’m obsessed with these little things, but I tell her it is my way of distracting myself from just constantly continuing about my work. But the stress is there. But sometimes, the euphoria you get from a sense of achievement in many ways compensates all the stress you had for a year or two.

Yes. Today has been really stressful. We had a workout this morning. It went okay. And then just that five and a half hour wait or something. I was just shaking, could barely nap. I've just never felt like this going into a competition before. And I tried to go out here and have fun. And warm up in the back went a little bit better. But then once I came out here, I was like, "No, mental is not there. So I just need to let the girls do it and focus on myself."

I was really vulnerable right before I left the coach, and I said to him, 'Are you still going to love me if I don't win this thing?'

My science family came from all over the world, and members were of varied backgrounds, cultures, and abilities. The diversity in this "small world" I worked in daily provided the most stimulating environment, with many challenges and much optimism. Over the years, my research group has had close to 150 graduate students, postdoctoral fellows, and visiting associates. Many of them are now in leading academic, industrial and governmental positions. Working with such minds in a village of science has been the most rewarding experience – Caltech was the right place for me.

At the age of 21, as a Moeid, I believed that behind every universal phenomenon there must be beauty and simplicity in its description. This belief remains true today.

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.