The theme of research to try to clarify the difference between the call of both Aristotle and Iamblichus, of philosophy, and the necessity of philosophizing.  all of them belong to the era unlike the other , which is between the fourth century BC and the fourth century AD , where they call Aristotle's philosophy as a breakthrough Aristotle than Plato's Academy , it is one of the compositions Aristotelian early , so the view of some historians that the compositions Aristotelian early did not receive the full emancipation of Platonic thought , and that the invitation to Aristotle's philosophy is one of the compositions Aristotelian lost, has hit something of confusion and imbalance in the classification by historians , and even mingled with some ideas upon subsequent eras in multiple , each according to his vision of Aristotelian philosophy , or perhaps collect some views of Aristotelian writings specialized gathered under the name of " an invitation to the philosophy of" an act historians confirmed that Aristotle wrote a book under this labeled.
We derive results in the following points :
First: not written Iamblichus, call to the philosophy of style book of Aristotle, but he put it to describe how the Pythagorean in meditation and the search for the survival of the human from the large number of births and imitating the god, and proof of this is the beginning of the book, in which he said: " Philosophy is the way, who thinks through human approach Alwithagori . " The finale came to view his thirty-nine of the symbols of Pythagoras such as Monas , the holy numbers , interpretation and significance ..... etc.
Add to this that there is a need to disclose cultural structure which lived Iamblichus, namely campaign lectureship Christians on philosophy and headed accusation of heresy , and then had to Mtvelsvy this era defense of philosophy and encourage studied.
Second, some thought that Iamblichus, intervention in the third section of the book call for Aristotle 's philosophy , but the right thing is the factors of history and historians are the reason for this book until it became an invitation to the philosophy of Aristotle Book distorted approach and approach .
 
Third, the difference between the two books is clear ...
1 - The current text of Aristotle did not exceed the number of pages thirty-eight page It starts in the translated version of the Arab page 30 to page 68 , The Book Iamblichus,in the Greek version of the English Ooualemtorgomh number of pages 170 hundred and seventy pages.
2 - found in the book of Aristotle paragraphs do not exist in the book Iamblichus,, including, for example :
** Paragraphs 72-73 . Where Aristotle talk about the difference between scientific knowledge and honest opinion
** Paragraphs 75-76 . The distinction Aristotle sense of vision for the other members because it is the most common unit , and that all perception is the ability to see something through the body, is also aware of hearing melodies by ear.
** Paragraphs 78-79 . The importance of perception , and we distinguish life from non- life on the basis of the ability to perceptual or do not possess .
Paragraph 80 ** - Aristotle and talk about the power and act , and the life force and life already .
82-83-84 ** vertebrae . Degrees deed, deed of owning, possessing the ability and act upon, owning and act upon the ability and practice.
• observed for these paragraphs and the reader of the book arts to Aristotle can say for sure that there is no difference between these paragraphs contained in the invitation to the philosophy of Aristotle and his self- Second Section vertebrae : a 412 -413 a -418 -418 A b