From his letter to America (can be found in "Messages to the World")
>The first thing that we are calling you to is Islam.
>We call you to be a people of manners, principles, honour, and purity; to reject the immoral acts of fornication, homosexuality, intoxicants, gambling, and trading with interest.
>You are the nation that permits Usury, which has been forbidden by all the religions. Yet you build your economy and investments on Usury. As a result of this, in all its different forms and guises, the Jews have taken control of your economy, through which they have then taken control of your media, and now control all aspects of your life making you their servants and achieving their aims at your expense
>You are a nation that permits acts of immorality, and you consider them to be pillars of personal freedom.
>You are a nation that permits gambling in its all forms. The companies practice this as well, resulting in the investments becoming active and the criminals becoming rich.
>You are a nation that exploits women like consumer products or advertising tools calling upon customers to purchase them. You use women to serve passengers, visitors, and strangers to increase your profit margins. You then rant that you support the liberation of women.
>You have destroyed nature with your industrial waste and gases more than any other nation in history. Despite this, you refuse to sign the Kyoto agreement so that you can secure the profit of your greedy companies and industries.
Will post more from his writings. If you are interested in converting, let me know