First notebook entry: Introducing myself Hello My name is Mahmoud Muhamed , am fresh graduate from petroleum engineering .. mad about science specially physics my favorite quotes are "we don't really know what is impossible , impossible of yesterday is the truth of today and the hope of the future " Robert Goddard " science is the poetry of reality " Richard Dawkins "I don't get frightened from not knowing things , i think it is much more interesting " Richard Feynman "The significant problems we face in our world can't be solved at the same level we were at when we created them" Albert Einstein "Stars usually say : although we are shining we ve explosions inside" Me :D