I went out of my way to promote the career of junior faculty, a new junior scientist coming and collaborating with me, and beginning their career when they did it. The main reason — I guess the only reason I can give — is that I couldn’t stand having a bad conscience. So that was it. So I did that, but it didn’t take any credit from me personally, I don’t think. And also, I owed. I owed particularly my mathematical collaborative, like MacArthur, Lumsden, and then subsequently in the late ’70s, George Oster. He was a splendid applied mathematician, when we worked out the first full theory of the evolution of caste systems in the social insects in terms of adaptation and optimization.