John Quincy Adams actually said...

"My first and greatest inducement was to meet in the spirit of kindness and friendship an overture made in that spirit by three sister Republics of this hemisphere."

"It was not considered a conclusive reason for declining this invitation that the proposal for assembling such a Congress had not first been made by ourselves."

"To meet the temper with which this proposal was made with a cold repulse was not thought congenial to that warm interest in their welfare with which the people and Government of the Union had hitherto..."

"I would have sent ministers to the meeting had it been merely to give them such advice as they might have desired, even with reference to their own interests, not involving ours."