“Do not concern yourself with whether or not you will become enlightened. Do not concern yourself with existence and non-existence, with inside and outside and in-between. Do not concern yourself with stopping” and “observing”. Do not concern yourself with whether this method of reciting the [mantra] is the same or not the same as other Buddhist methods. If the feeling of doubt does not arise, do not concern yourself with who it is or who it is not. Simply go on reciting the [mantra] with unified mind and unified intent without a break, pure and unmixed.” – Master Chu-hung