David Thomas described the book as an "illuminating study into an overlooked corner of Victorian religious history".

But there is more to "Stuff Happens," staged by Nicholas Hytner (the National's artistic director), than these two illuminating studies in styles of statesmanship.

Last year our reviewer, Anthony Heilbut, called the book a "heartfelt, illuminating study."

The result is "one of the most profound and illuminating studies of this century . . . in recent decades," John Gray wrote here last year.

Many other journal articles concerned illuminating studies of Akkadian literature, including the Gilgamesh Epic.

An illuminating study of the divergence and convergence of cultures brought on by explorers.

Here we have "a subtle, humorous, illuminating study of politics, power and social mobility," Stephen Holden wrote in The New York Times.

Roosevelt called the book "the most profound and illuminating study of our national condition which has appeared for many years."

It is an illuminating and sobering study that offers few excuses for France.

(front page, April 24), on the prospects for India's national election in late May, is an illuminating study of a murky situation.