Nobody has seen the other side of the Himavat mountains, nor the reverse of the moon's disc. Yet it cannot be said that they do not exist.
यथा हिमवतः पाक् पृष्ठं चन्द्रमसो यथा। न दृष्टपूर्वं मनुजैन च तन्नास्ति तावता॥