My mother used to say to me a thing which, when I look back on it, wasn’t terribly logical. — and I had a pretty hearty appetite, but when I had had a large meal put in front of me, and even I couldn’t get through it, she would say, “Edmund, remember the starving millions in Asia.” Now what possible use my consuming it would do for the starving millions in Asia, I don’t really know, but the fact remains that I was brought up to think about the starving millions in Asia. That meant I had to clean my plate up and not waste it. Later on, I got more involved with the starving millions in Asia, perhaps in a slightly more practical way: helping some of them with schooling and hospitaling and even in agriculture.

“David, you are going to walk among kings.” This was my mum’s prophecy when I was small. My father is from a royal family in Nigeria, so I interpreted it that way. Remarkably, she was right: I went on to play King Pelasgus, Henry VI, Martin Luther King and Seretse Khama.

One of my favorite lessons is best summed up in the words of an old Athabascan Indian who told me, “There are many hard things in life, but there is only one sad thing, and that is giving up.”

There’s a few that are immediate, because he just drilled them into my head. One is “Nothing attracts a crowd like a crowd.” Try as hard as you want to market something, get a crowd. That’s what actually matters. Another one that he still says all the time is, “You’ve got a violin, I’ve got a barn. Let’s put on a show. Don’t overthink this, just go.

you have got to be totally honest and give advice and analysis that you’re asked to give that’s based on evidence. And if the analysis that you come to comes to a conclusion that a president might not like to hear that, you can’t be afraid of saying, “Mr. President, with all due respect, this is the way I think the situation is.”