A linguist would be shocked to learn that if a set is not closed this does not mean that it is open, or again that "E is dense in E" does not mean the same thing as "E is dense in itself".
John Edensor LittlewoodThe higher mental activities are pretty tough and resilient, but it is a devastating experience if the drive does stop. Some people lose it in their forties and can only stop. In England they are a source of Vice-Chancellors.
John Edensor LittlewoodTry a hard problem. You may not solve it, but you will prove something else.
John Edensor LittlewoodThe first lecture of each new year renews for most people a light stage fright.
John Edensor Littlewood