Don't hedge your prose with little timidities. Good writing is lean and confident. . . . Every little qualifier whittles away some fraction of the reader's trust. Readers want a writer who believes in himself and in what he is saying. Don't diminish that belief. Don't be kind of bold. Be bold.

Don't let schooling interfere with your education.

Far more thought and care go into the composition of any prominent ad in a newspaper or magazine than go into the writing of their features and editorials.

All too often, technology is treated as a silver bullet for perceived problems in education. This sometimes leads to knee-jerk investments, using scarce resources to invest in software or hardware without a clear notion of how either might actually empower learning.

I vowed to myself that when I grew up and became a theoretical physicist, in addition to doing research, I would write books that I would have liked to have read as a child. So whenever I write, I imagine myself, as a youth, reading my books, being thrilled by the incredible advances being made in physics and science.

Let us not forget the genial miraculous force we have known to proceed from a book.