What he found may offer a vital clue to a profound global mystery.

The moment is sacramental, a simple act of profound mystery.

We must find the eternal friend that has been bidden within us throughout time and which is the profound mystery of man.

How these records are made, since the embryo does not develop sense organs until late in its history, remains a profound mystery.

Whither they go at this time is a profound mystery.

"I'm not embarrassed to say it's the most profound mystery in all of science."

The operation of your body is a profound mystery.

Even the operation of the engine in your car is a profound mystery.

Why this should have happened is, to me, the most profound mystery facing modern biology".

But leprosy itself still remains the same awful and profound mystery.