Rather disappointed with what many consider a masterpiece yet implemented. The literary style is so poor that it seems a novel aimed at under 12 (It is true that I had just finished just before "African equation" Yasmina Kadhra, which is a beautiful lyricism .. .). Asimov did not show either a great vision of the future (it only transposes 10,000 years later the problems of nuclear 1950-1960) and with no philosophical significance, the interest of the book is extremely weak.
I hesitate to read the other two I (stupidly) purchased together! ...