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AlGhazalisIhya-Book_of_knowledge, page : 9
It is true that men have written several works on some of these aspects, but this
one differs from them in five ways:
First: by clarifying what they have obscured and elucidating what they treated
casually.
Second: by arranging what they have disarranged, and organizing what they
have scattered.
Third: by ensuring what they have elaborated, and correcting what they have
approved.
Fourth: by deleting what they have repeated then verifying what they have set
down.
Fifth: by determining ambiguous matters, which have hitherto been unintelligible
and never dealt with in any work. Although all have followed one course, there is
no reason why one should not proceed independently and bring to light
something unknown, paying special attention to what his/her colleagues have
one differs from them in five ways:
First: by clarifying what they have obscured and elucidating what they treated
casually.
Second: by arranging what they have disarranged, and organizing what they
have scattered.
Third: by ensuring what they have elaborated, and correcting what they have
approved.
Fourth: by deleting what they have repeated then verifying what they have set
down.
Fifth: by determining ambiguous matters, which have hitherto been unintelligible
and never dealt with in any work. Although all have followed one course, there is
no reason why one should not proceed independently and bring to light
something unknown, paying special attention to what his/her colleagues have