My best analogy would be as follows. First we have to understand the definition of virtue. It is moral excellence, a standard of right. So, lets say I am a kid who is bullied. I am depressed and can barely make it another day because of the mental and physical anguish I may endure. Rather than allowing the disparity to bring me to the brink of self destruction, I choose instead to have faith in the unknown future that this trial in my life will come to an end on its own. That is where the virtue lies. In the face of all adversity you rise above it virtuously by believing in something you have yet to see, i.e., the future. The virtue also lies in the fact that it is easier to give up and give in to the pressure of it all and find instant relief, as opposed to valiantly carrying on with courage, hope and faith, especially when it is hard to believe (have faith) that the pain will ever end. Though, this is really not just a Christian concept. That being said. You cannot simply go around in all honesty and say you believe in something like unicorns, astrology, God, or even a bright future, and actually expect to be blessed by it. If that kid truly believed by faith in his heart that the future will be great, he can be joyous (blessed) in the face of all the adversity. In this day and age, I believe that to be more of a gift than a blessing. However, if you did believe in unicorns, truly believed, the key word is believe, there would be a sense of joy of having something to believe in, thus you would be blessed (joyous). The issue is not about whether you can prove it to someone else or not. What difference does that make to you? Someone can cram all they want down someone else's throat hoping to make them believe, but it cannot be done, nor will it ever work. Nor should anyone want to do that. Believing in something comes from the free will of one's own mind and soul. Perhaps your faith resides in science. There is a lot of theory that has not been proven, yet you are excited and overjoyed of the possibilities. You are now believing and having faith in something you do not see, nor has been proven. Only the concepts have been made manifest, not the proof of those possibilities. Maybe one day those possibilities will be made manifest. But blessed are you to have been overjoyed with those possibilities all along rather than emotionless until you actually saw the proof, especially when that proof may never come in your lifetime. Anyway, just my take on it.