Aklın bütün meseleleri kavramada müstakil ve bütün müşkillleri halledecek durumda olmadığını anladım. - Al-Ghazali

"هذا هو مذهب الشافعي رضي الله عنه وكنت أود أن يكون مذهبه كمذهب مالك رضي الله عنه في أن الماء وإن قل لا ينجس إلا بالتغير إذ الحاجة ماسة إليه ومثار الوسواس اشترط القلتين ولأجله شق على الناس ذلك وهو لعمري سبب المشقة ويعرفه من يجربه ويتأمله"
من كتاب أسرار الطهارة

If you were to show a piece of intelligible writing to a reasonable person and say to him: 'do you know its writer?' and he said 'no', he would be speaking truly. But if he said 'yes: its writer is a man living and powerful, hearing and seeing, sound of hand and knowledgeable in the practise of writing, and if I know all this from [the sample] how can I not know him?-he too would be speaking truly. Yet the saying of the one who said 'I do not know him' is more correct and true, for in reality he has not known him. Rather he only knows that intelligible writing requires a living writer, knowing, powerful, hearing, and seeing; yet he does not know the writer himself. Similarly, every creature knows only that this ordered and precisely disposed world requires an arranging, living, knowing, and powerful maker.

Yet whoever believes in something to which he has not attained believes in what he cannot see [al-ghayb], and that is the key to happiness.