untiring

He was awarded the Nobel Peace Prize in 2002 for “decades of untiring effort to find peaceful solutions to international conflicts” and to advance democracy and human rights.

“Such enthusiasm!—the whole battalion with helmets and tunics decked with flowers—handkerchiefs waving untiringly—cheers on every side....This hour is one such as seldom strikes in the life of a nation.”

Carter’s Nobel citation honored “his decades of untiring effort” to resolve conflicts, promote democracy and foster economic development.

Carter won in 2002 in part for his "untiring effort to find peaceful solutions to international conflicts."

The Nobel committee cited “his decades of untiring effort to find peaceful solutions to international conflicts, to advance democracy and human rights, and to promote economic and social development.”