Sri Aurobindo
Letters of Sri Aurobindo
Volume III - Part 1
Fragment ID: 12047
When you are in connection with the higher worlds above the mental, with the mental and the psychic or even with some of the higher vital planes, then there is the peace and Ananda – but connection with the lower vital worlds can easily bring disturbance and unrest, so long as your vital itself is not changed and made full of peace and strength and quiet.