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Even in abstraction, mathematics has profound real-world applications.
The duty of man is the same in respect to his own nature as in respect to the nature of all other things.
The longer you look at an object, the more abstract it becomes, and, ironically, the more real.
No matter what happens, keep singing, keep dreaming, keep believing.
The problem of the modern individual is not that he has too little choice, but that he has too much.
出自晋·葛洪《抱朴子·博喻》。名与实不相符者,不会名垂千古;地位高而不称职的人,不免要被夺去位子。