Faith is a living, daring confidence in the grace of God, of such assurance that it would risk a thousand deaths. This confidence and knowledge of divine grace makes a person happy, bold, and full of gladness in his relation to God and all creatures.
It's believing something that you know with your mind isn't true. It's some kind of overdrive that you push in with a button of some kind in your mind or your emotions. Or, somewhere as "they" say down in your heart, to get you to accept something that you know with your intellect could not possibly be true. And so many of us, in this world today are sceptical of the whole idea of faith, because we think of it as something not connected with the ordinary processes of the mind at all. It's actually opposed to the convictions of the intellect. And so many of us who have been through some kind of education and especially some kind of scientific education, get the idea that to have faith you have to in some way close your mind, or put your intellect to sleep, or ignore the conclusions of science and research.

