
“In a day of peace, let us advance the arts of peace and the works of peace.”
The last sentence of this quote is incised in marble on the wall of the United States House of Representatives chamber, directly behind the Speaker's chair (with the word "develop" spelled with a final "e").
Address on Laying the Cornerstone of the Bunker Hill Monument (1825)
Context: Our proper business is improvement. Let our age be the age of improvement. In a day of peace, let us advance the arts of peace and the works of peace. Let us develop the resources of our land, call forth its powers, build up its institutions, promote all its great interests, and see whether we also, in our day and generation, may not perform something worthy to be remembered.