So what is the cause, the root of fear? Is it thought and is it time? We must cover a great deal so we must be brief. Is it thought - thinking about the future or thinking about the past? And so, is thought one of the causes of fear? And is time also the cause - time, as growing old, as most of us are. The moment we are born we are already growing old. And time as future - not by the watch, by the day or by the year - but time as a movement from 'what is' to 'what should be', 'what might be', 'what has been', we said the whole movement of time, the psychological process of time - is that one of the causes of fear? The memory of some pain, both physical and psychological, which might have happened a couple of weeks ago and remembering that and being afraid that it might happen again - which is the movement of time and thought.