St Justin Popovich - Faith, which bathes the understanding in light, frees man from pride and doubt...

It is the man who restores and transforms his organs of knowledge by the practice of the virtues that comes to the perception and knowledge of the truth.

For him faith and knowledge, and all that goes with them, are one indivisible and organic whole. They fulfill and are fulfilled by one another, and each confirms and supports the other.

“The light of the mind gives birth to faith,” says St. Isaac, “and faith gives birth to the consolation of hope, while hope fortifies the heart.

Faith is the enlightenment of the understanding. 
When the understanding is darkened, then faith hides itself and fear holds sway, cutting off hope.

Faith, which bathes the understanding in light, frees man from pride and doubt, and is known as ‘the knowledge and manifestation of the truth.’”

St Justin Popovich