Al Salamu 'Alaykum.
A man's Islam is not secure unless it is based on submission and surrender. Anyone who desires to know that which is beyond his capacity to know and whose intellect is not content with surrender, his covetousness will veil him from a pure understanding of Allah's Unity, clear knowledge and correct belief, and he will veer between disbelief and belief, confirmation and denial, acceptance and rejection. He will be subject to whisperings and find himself confused and full of doubt, being neither a firm believer nor a resolute denier.
Al-Aqida al-Tahawiyya.
