"It was a mere calumny to call him an enemy to freedom. In its truest and most literal sense—the exemption from oppression—he did more for it than any statesman of his age. We have the testimony of the Duke of Wellington, that he had done more to destroy the slave-trade than any man in Europe; and the struggle which absorbed the best years of his life was a struggle on a vast scale for the liberties of mankind."
January 1, 1970
https://en.wikiquote.org/wiki/Robert_Stewart%2C_Viscount_Castlereagh