Bright in its proper station

From Samuel Johnson, A Journey to the Western Islands of Scotland:

[O]ne generation of ignorance effaces the whole series of unwritten history. Books are faithful repositories, which may be a while neglected or forgotten; but when they are opened again, will again impart their instruction: memory, once interrupted, is not to be recalled. Written learning is a fixed luminary, which, after the cloud that had hidden it has past away, is again bright in its proper station. Tradition is but a meteor, which, if once it falls, cannot be rekindled.