Islam deals not only with what man must and must not do, but also with what he needs to know. In other words, Islam is both a way of acting and doing things and a way of knowing.
Philosophy, Islam
The sun symbolizes the Divine intelligence; the empty vastness of space symbolizes the Divine All-Possibility and also the Divine immutability; a bird symbolizes the soul; a tree symbolizes the grades of being; and water symbolizes knowledge and rain revelation.
Faith in Qur'anic revelation unveils all the possibilities that lie before the human intellect.
The unity of scientific and spiritual knowledge is realized when each of the particular sciences is organically related to the supreme knowledge of al-tawhid.
Rationalism is false not because it seeks to express reality in rational mode, so far as this possible, but because it seeks to embrace the whole of reality in the realm of reason, as if the reason coincides with the very principle of things.
To the extent that in one's act of faith one participates in the truth through reason and heart, faith already implies a particular level of knowledge and of certainty.