QUOTE : Philosophy is the creative art of cunning 'Demons' -- it is going to fill human brain and heart with doubt in everything. Even the fact that you do really exist in reality, which seems so obvious and undeniable, becomes a matter of doubt. How can you definitely insist that you are not only bodies brain under the stimulation in such a way that some external being(s) -- supernatural or natural -- feed your brain with the illusory ideas that you are real, and perhaps you are sitting in front of the computer, and reading what is written there. And there is no definite fact that this is not the case, but instead, it is very, very difficult to resist the temptation of philosophical thinking in that direction -- therefore, sooner or later you are going to be involved in such kind of 'demonic' activity, if you are really determined to penetrate deep into mind-blowing questions of philosophy.