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My answer: yes and no.
If by clearing the mind, we mean turning it off, emptying it out, and becoming devoid of all thought... then no. First of all, it is nearly impossible to truthfully do; we usually end up thinking awfully hard about not thinking (quick -- don't think of a purple elephant!). Secondly, it is unnatural and, well, boring. Honestly... would you rather sit still and stare at a blank wall or watch the latest episode of Lost? Because the self is hard-wired to be active (to be, to love, to serve), the mind's got to do something. Starving it now will probably just cause it to freak out later.
Bhakti Yoga teaches that the mind can be positively engaged by focusing on the sacred sounds of the mantra. The great Bhakti mystic Sri Chaitanya wrote:
Chanting the Divine Names
allows one to clear away the dust
that is covering the mirror of the mind.
allows one to clear away the dust
that is covering the mirror of the mind.
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Mantra meditation is one practice that helps us to do some badly needed spring cleaning (from the inside out) by clearing away the layers of ignorance, selfishness, and materialism that prevent us from seeing our own potential and the beauty of the creation around us.
When we can do that, we will will be able to peer into the mirror of the mind, and see -- perhaps for the first time -- the true Self.
~ V.