That which he can comprehend is not God.

That conception of God which a man forms for himself is but a phantasm, an image, an imagination, an illusion.

There is no connection between such a conception and the Supreme Being.
If a man wishes to know God, he must find Him in the perfect mirror, Christ or Baha'u'llah.

In either of these mirrors he will see reflected the Sun of Divinity.
As we know the physical sun by its splendor, by its light and heat, so we know God, the Spiritual Sun, when He shines forth from the temple of Manifestation, by His attributes of perfection, by the beauty of His qualities and by the splendor of His light.
(from a talk to Mr.Percy Woodcock, at Akka, 1909).
Again He says: Unless the Holy Spirit become intermediary, one cannot attain directly to the bounties of God.

Do not overlook the obvious truth, for it is self-evident that a child cannot be instructed without a teacher, and knowledge is one of the bounties of God.
The soil is not covered with grass and vegetation without the rain of the cloud; therefore the cloud is the intermediary between the divine bounties and the soil....