"People speak of the differences between the three powers on certain security issues. One should be surprised not that there exist differences but that there are so few of them and that they are, as a rule, resolved almost every time in a spirit of unity and concerted action of the three great powers".

Joseph Stalin. 27-ya godovshchina Velikoy Oktyabr’skoy sotsialisticheskoy revolyutsii [27^th Anniversary of the Great October Socialist Revolution], Moscow, 1944, p. 15.

"The strength of the Soviet Government, the fortitude of the Russian people, their immeasurable reserves of manpower, the vast size of their country, the vigours of the Russian winter were tilt factors which ultimately ruined Hitler's armies. But none of these made themselves apparent in 1941. President Roosevelt was considered very bold when he proclaimed in September 1941 that the Russian front would hold and that Moscow would not be taken. The glorious strength and patriotism of the Russian people vindicated this opinion."

Winston Churchill

W. Churchill, The Second World War,
vol. III: “The Grand Alliance”, London, 1949, pp. 350–351.

"I know you will not mind my being brutally frank when I tell you that I think I can personally handle Stalin better than either your Foreign Office or my State Department. Stalin hates the guts of all your top people. He thinks he likes me better, and I hope he will continue to do so."

Roosevelt – Churchill, 18 March 1942.
Roosevelt and Churchill: Their Secret Wartime Correspondence,
New York, 1975, p. 196.