Even when I wasn't doing much 'science for the public' stuff, I found that four or five hours of intense work in physics was all my brain could take on a given day. — Brian Greene Copy Share Image
I find that in the course of the day when I'm writing, after three or four hours of intense work, I have a splitting headache, and I have to stop. Because the involvement, which is both creative and self-critical, is… — Edward Albee Copy Share Image