Warren Buffett called Bogle “a hero to millions of investors”. He was right. I’ve lost count of how many copies I’ve given away over the years. This Christmas, I’ll be giving away more.

“Suppose f is a quadratic function satisfying f(6)=0, f(-6)=0, and f(0)=10. Then f(4)= A. 5 B. 5.5 C. 5.555 D. 5.666 E. None of the above. “OK, come on up here to the board and do those computations ...

You cook with them, clean with them, and count on them daily, but which refrigerators, ovens, air fryers, microwaves, and ...

In the last major international event before February's Olympics, the American Malinin kept his two-year unbeaten streak going.