Speeches of His Highness the Aga Khan IV:
http://www.iis.ac.uk/view_article.asp?ContentID=104623
Speeches of Sir Sultan Muhammad Shah Aga Khan III:
http://www.iis.ac.uk/view_article.asp?ContentID=104628
Memoirs Of Aga Khan III: Islam, The Religion Of My Ancestors(Extract)
http://gonashgo.blogspot.com/2010/05/608memoirs-of-aga-khan-iii-islam.html
Approximately 30% of the excerpts and quotes from this post come from the above two sources:
http://gonashgo.blogspot.com/2008/02/327comprehensive-quotes-of-aga-khan-iv.html
Easy Nash
The Qur'an itself repeatedly recommends Muslims to become better educated in order better to understand God's creation: Aga Khan IV(2007)
The Quran tells us that signs of Allah's Sovereignty are found in the contemplation of His Creation: Aga Khan IV(2007)
This notion of the capacity of the human intellect to understand and to admire the creation of Allah will bring you happiness in your everyday lives: Aga Khan IV(2007)
Islam, eminently logical, placing the greatest emphasis on knowledge, purports to understand God's creation: Aga Khan IV(2006)