Here is a comment by a user Arun on a post on Alhazen (Ibn Al-Haitham) on a mighty blog called Cosmic Variance.
12. Arun Says:
January 9th, 2011 at 10:31 am
The Physics Today article has:A few things can be said right away. (1) Arun knows a thing or two about Physics, (2) about the Holy Qur'an, (3) the Hadith, (3) Knows the difference between the two, (4) Knows that the above particular statement purported to be in the Holy Qur'an is not in the Holy Qur'an, (5) Knows that there are weak Hadiths, (6) Knows that there is a method to separate the correct from the weak Hadith and (6) Searched the Wiki for above mentioned Hadith.
“The ink of the scholar is more holy than the blood of the martyrs,” the Koran says
As far as I know, this is wrong. The Quran does not have any such thing. This is from the Hadith (narrations recording the sayings and doings of the Prophet).
Moreover, the Hadith are classified by whether the chain of narration from the time of the Prophet to when the hadith were recorded a century or two later is reliable or not. As per Wiki, this is a weak Hadith.
Now make a guess about the depth of the original bloggers from the level of this single comment of a commenter.