Thus spoke Sri Ramana Maharshi
Meditation is truly speaking remaining rigid in Self, but when thoughts cross the mind and the effort is made to eliminate them, the effort is termed meditation. Remain as you are. That is the aim. Meditation is negative in as much as thoughts are kept away.
Who is the meditator? Ask the questions first. Remain as the meditator. There is no need to meditate. Meditation is sticking to one thought.
All experiences, in meditation, are all only mental conceptions.