However, in his later years he did far more painting than sculpturing, as painting was a much less difficult medium to work with.

He himself regarded them only as experiments in a difficult but fascinating medium.

It is a difficult medium, but I thought you would enjoy it more than oils.

She had to study the situation as if it were an engineering problem, like trying to exert force in some difficult medium.

It's perhaps the most difficult medium of all.

"In this, you see that he was really a master of this difficult medium."

He has a wonderful touch in a very difficult medium!

"The Internet is a very difficult medium to measure," yesterday's report said.

Pastel is a difficult, crumbly, unstable medium, but he made it look effortless.

It's a difficult and demanding medium, and takes a certain kind of personality.