
Islam is the message that
Allah sent to all mankind through his Prophets. The Message of Islam has always been to worship
Allah alone without associating
any partners with him and to follow the Messengers that he, the most High, sent to mankind.
The Last and final Messenger was Muhammad

And it is his example and guidance that Muslims must seek to emulate and act upon.
Islam is perfect, and there is no need for it to ever be changed or "Modernised". For
It is a religion of ease and moderation. Infact, those Muslims who do not act according to the true sources of Islam are the ones who are "backwards". Advancement for mankind is through the pure Islam.
Therefore there is absolutely no need for people to differentiate and use the terms "Moderate" or "Fundamentalist" Islam. Islam is one, the
fundamentals of Islam should be based upon the true sources of Islam, i.e. the Quran and the Sunnah (way of the Prophet). If the latter is done, then the Muslim's life will be the one full of light, understanding, compassion and ease.
source :www.turntoislam.com