He was a major proponent and supporter of recreational mathematics for decades.
Sher was a major environmental proponent during his time in the legislature.
He is also a major proponent of the open source software movement.
The United States has been a major proponent of the project.
He had been a major proponent for progressive thought and reform in the evangelical community.
"It's a substantive issue being fought in the center, with law enforcement as its major proponent."
He was a major proponent of education for all children.
He is considered a major proponent of the Azonto genre and dance.
He was a major proponent for the development of privatelyl-owned electronic media.
James I was a major proponent of this idea and wrote extensively on it.