Clairvoyance. The faculty of seeing with the inner eye or spiritual sight. As now used it is a loose and flippant term, embracing under its meaning a happy guess due to natural shrewdness or intuition, and also that faculty which was so remarkably exercised by Jacob Boehme and Swedenborg. Real clairvoyance means the faculty of seeing through the densest matter (the latter disappearing at the will and before the spiritual eye of the Seer), and irrespective of time (past, present and future) or distance.
— HELENA BLAVATSKY