18. The deeply learned ones know the mind as the directly expressed meaning of the supreme knowledge. The heart is the meaning aimed at. The Supreme … - Ramana Maharshi

What is called mind is a wondrous power existing in Self. It projects all thoughts. If we set aside all thoughts and see, there will be no such thing as mind remaining separate; therefore, thought itself is the form of the mind. Other than thoughts, there is no such thing as the mind.

If other thoughts rise, one should, without attempting to complete them, enquire, 'To whom did they arise?', it will be known 'To me'. If one then enquires 'Who am I?', the mind (power of attention) will turn back to its source. By repeatedly practising thus, the power of the mind to abide in its source increases.

21. During that time, the embodied person does not know the attainment in the heart. It is known in the Samadhi. The difference in name is due to the difference in cause.