To meditate means to realize ...

To meditate means to realize inwardly the imperturbability of the Essence of Mind. The reason why we are perturbed is because we allow ourselves to be carried away by the circumstances we are in. Those who are able to keep their mind unperturbed, irrespective of circumstances, have attained Inner Peace.
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 Huineng

Quotes from the same author

The capacity of the mind is broad and huge, like the vast sky. Do not sit with a mind fixed on emptiness. If you do, you will fall into a neutral kind of emptiness. Emptiness includes the sun, moon, stars, and planets, the great earth, mountains and rivers, all trees and grasses, bad people and good people, bad things and good things, heaven and hell; they are all in the midst of emptiness. The emptiness of human nature is also like this.
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 Huineng
Zazen is seated meditation-the opposite of contemplation-the emptying of the mind of all thoughts in order simply to be. In the midst of all evil, not a thought is aroused in the mind-this is called za. Seeing into one's Self-nature, not being moved at all-this is called Zen.
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 Huineng
It is your minds that are moving.
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 Huineng
To be bigoted & argue with others, is to subject one's essence of mind to the bitterness of mundane existence.
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 Huineng