
History and geology take us away from the now, astronomy takes us away from the here. The man whose mind has been filled with these studies gets a feeling that there is something accidental, and almost trivial, about the fact that his ego occupies a very particular portion of the space-time stream. His intellect becomes gradually more and more detached from these physical needs. It acquires in this way a generality and scope and power which is impossible to one whose thoughts are bounded by his animal wants.
Source: Bertrand Russell: A Philosophy of Our Time (1953)
More info.:http://russell-j.com/beginner/1026_PfOT-020.HTM