He was considered to be one of Canada's foremost constitutional experts.

He is considered one of the foremost experts on musical physics.

He was considered one of the foremost experts in the field during his 25-year career.

Even at 70 he remains one of the world's foremost experts in this domain.

He was one of the country's foremost experts on flies and how they function.

First, he is one of our foremost experts on the constitution.

"Am I not the foremost expert on epidemiology in my nation?"

He was one of the twentieth century's foremost experts in Roman law.

He is one of the world's foremost experts on legal history, marriage law, and religious liberty.

Jackson is known as one of the nation's foremost experts on bankruptcy law.