Ramana Maharshi on sensatiohn of fear during Meditation

Question : When the mind begins to subside into the Self there is often a sensation of fear.
Ramana Maharshi : The fear and the quaking of one's body while one is entering samadhi is due to the slight ego-consciousness still remaining. But when this dies completely, without leaving even a trace, one abides as the vast space of mere consciousness where bliss alone prevails, and the quaking stops.