Truth is a descriptive label placed on information believed to meet the standard of having no false attributes. These attributes are in accordance with reality and fact as defined by most dictionaries. However, note that fact and reality are only contingent on the information received. Therefore, truth is subject to change depending on the information.
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A direct link between meaning and emotion seems to exist for humans. Without meaning we feel depressed, sad, unfulfilled, wanting.... It gives us direction, placement, satisfaction. How we use it affects all other aspects in our lives. What is interesting is, on the surface, it is unnecessary to have meaning. If there were no link between meaning and emotion, then we would have no need to search for this intangible object therefore using our resources in better ways to actually help with survival. Whether or not animals and other non-human entities have emotions and ascribe meaning to emotion is left for the biologists, psychologist, and other philosophers.
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Unlike man, animals, so to speak, live without knowing death. The individual animal enjoys fully the immutability of its gender, being conscious of itself only as an immortal being.
-Arthur Schopenhauer Think More...

Music doesn’t bake bread, build buildings or save lives. Music is entirely unessential to survival. In some extremes it is unessential to comfort living. So why study music? Why practice it? Why listen to it at all? Because life for us isn’t meant solely for survival. Think More...

Along with thought and understanding, throw in emotion. Just a byproduct of the senses, emotion makes everything much more interesting. Our senses bring our “thinking things” information to think about and process and understand. That understanding is all equal. We do not like this equality, there’s simply too much information for it to all be equal and to require equal thought and time. Imagine you’re sitting at your desk and every time there is new information your secretary brings you a file filled with that information. You take it and set it on top of your desk. A moment later she brings in another file. You place it by the first. Then she brings you another and another. Very soon you have to request a bigger desk. Okay, that’s fine. You get a bigger desk. Your secretary brings you more files and then you have to get a bigger desk. There must be a better way! Think More...