Unfortunately, this must be made a very strict conditions, that mathematicians must not be too old. Mathematics is a creative rather than a meditation discipline. No one can lose the ability to create or no longer have the desire to create Shihai from the discipline of mathematics in consolation. This case and lose the ability to create desire may soon happen to a mathematician, very sad. In this case, he is not any important role, there was no need for him to worry about.
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