The results, for all their staginess, are helpful readings of famously difficult texts.

Cezanne at that time was famously difficult to get to know.

Brand equity is strategically crucial, but famously difficult to quantify.

Running a mile in less than four minutes is a famously difficult achievement, long thought impossible by the scientific community.

In the American system of government it is famously difficult to get anything done.

This is a consistently impressive account of the famously difficult six-movement symphony.

It made me laugh, and was the perfect opening act to an interview with a famously difficult Nobel laureate.

The concept of modernism is famously difficult to define.

And of course it is famously difficult, some say impossible, to sing.

There's no question he can drive the thing, better than nearly anyone else around; he made this famously difficult concerto sound practically easy.