It is often the case that when you look at things a certain way, they become filtered over time, and you see what you expected to see. This happens to everyone, and while a wonderful adaptation to help handle all of the various inputs in our lives, has caused just about everyone to jump to conclusions because they think they know what they see. Neville Chamberlain did that. He (and his advisors) was certain that Hitler would keep the peace after he was given what the German people wanted. He saw Hitler as the same as other European leaders, and that was definitely not what Hitler was. There is no definitive proof that things would have gone differently had the allied powers put their foot down on Czechoslovakia. But the Munich accords, and the statement quoted above, definitively did put an end to Chamberlain’s career.