We always think, that’s true. That’s why the famous French philosopher Descartés had identified the human existence with his process of thinking. But the act of thinking is not always at the first level, though mostly it is. Sometimes we think of some thoughts. We can call it “second level thinking”. In this case we think in some kind of abstract issues, namely about thoughts of things. But the real abstract thinking goes further: Thinking of thinking itself. For example, what kind of a thing is this experience we called “thinking”. Where we could suspect everything we think we know, this cannot be in any kind of doubt: We think and we exist as a constant stream of thinking. Theoretically, or maybe we should/may say logically, thinking could not be grasped by thinking. Because when it tries to grasp it, then it itself should also would be the subject of grasping. And this goes infinetly… Then are we perplexed at understanding what thinking, as our mode of existence, is? That seems so. Nevertheless, analyzing the elements of thinking could provide us an understanding that could tell us firstly what thinking is not, secondly the real difference of it from other experiences we live during our existence, and thirdly the limits of our understanding of even ourselves. The wisdom we are expected to achieve is clear: We should strive to know more and more, knowing we would always know little.