Never take yes for an answer

The most argumentative man I ever met was a Croatian called Mischa. He disapproved of almost everything and everyone, and had even developed a special sound to express his contempt, something like Eeurgh!.

He was quite literally disagreeable, in that he would never let you agree with him. Once, in the middle of what had turned out, inexplicably, to be an acrimonious discussion, I said to him, "Mischa, why are we arguing? I wholeheartedly agree with you".

"Eeurgh," he replied, "it's not a question of agreement".

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