The foundation of all knowledge is "empiricism". I see a swan so I assume swans exist. I jump in a lake so I assume that this lake exists. Many observations can lead to indirect form of knowledge like scientific theories.
But the huge corpus of human knowledge is all based on something so frail and fallible. Everything we humans claim to know comes from our senses. We attribute "Reality" to the observations of our senses but the truth is that these senses are far from infallible and we humans live in a world dominated by a persistent Cartesian doubt
There is another sense. Perhaps we can call it emotion. Feelings. Faith. Scientists generally reject such things as sources of truth. Just because you FEEL that you are Napoleon doesn't make you into a conquering dictator. Just because you FEEL that an invisible man gave you a holy book doesn't make a revelation at Sinai happen.
Or at least that's what the scientist will say.
But why are the impressions made on our senses any better than impressions made on our hearts. Why is the former a more valid source of truth in many people's eyes. Maybe I actually am Napoleon if I feel like it. Maybe God does exist if I feel it in my heart. If my eyes fail to confirm God perhaps my heart can.
Perhaps the feelings of the heart are just as much a window to this thing called "Reality" as the observations of the eyes.
One obvious advantage of empirical observations vs. "emotional observations" is that empirical observations have proven themselves useful. The advance of technology, improvement of human living conditions, medicine, science all the foundations of modern society all come from accepting "empiricism".
Have the feelings of the heart proven as useful? That is a matter which needs further study.
But we have to keep in mind that it is the heart that originally validated empiricism. The human heart is certain that it is surrounded not by an illusion - but by something real - something with an independent existence. Philosophers can prattle all day about whether or not this world we live in is not some sort of solipsistic delusion. But even the most skeptical philosopher will go home to eat supper - unafraid that his home is but a delusion. But all of this is merely a feeling an "observation of the heart". Before we had invented tools or dabbled in technology we did not know that empiricism would prove useful. But we felt that it was true. We felt that what we saw is what there is. Without questioning....
This is perhaps a variation of the lame blogger argument that can be summed up as "I don't know other people exist but I assume they do and same goes for God." Most people, myself included, have laughed at this argument. But perhaps there is more to it than meets the eye.
If you feel God exists. If your "heart's eye" literally screams that he is there watching you. Then is it any worse than believing that the car parked outside your house is actually there....
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