“When once clear awareness and comprehension have been firmly established in a limited but vital sector of the mind’s expanse, the light will gradually and naturally spread, and will reach even distant and obscure corners of the mind’s realm which hitherto had been inaccessible. This will mainly be due to the fact that the instrument of that search for knowledge will have undergone a radical change: the searching mind itself will have gained in lucidity and penetrative strength.”
Source: The Heart of Buddhist Meditation (1965), p. 34
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Nyanaponika Thera 30
German Buddhist monk 1901–1994Related quotes
The Four Cardinal Virtues: Prudence, Justice, Fortitude, Temperance (1965)

Silence Speaks, from the chalkboard of Baba Hari Dass, 1977
Context: Q: Can intellect aid understanding? A: It helps in the beginning but cannot give full enlightenment. The mind is the main instrument to gain enlightenment, but enlightenment is only reached when the mind stops. Q: How can we stop the mind? A: Not hitting it with a hammer. Stop the mind by the mind. (p.31)

Conversations with... Sathya Sai Baba by Dr. J. Hislop, p. 190 old ed., page 173 new edition

Source: Art, 1912, Preface, p. 7-8
Context: Art is contemplation. It is the pleasure of the mind which searches into nature and which there divines the spirit by which Nature herself is animated. It is the joy of the intellect which sees clearly into the Universe and which recreates it, with conscientious vision. Art is the most sublime mission of man, since it is the expression of thought seeking to understand the world and to make it understood.

“There is this first benefit from myths, that we have to search and do not have our minds idle.”
III. Concerning myths; that they are divine, and why.
On the Gods and the Cosmos
Context: There is this first benefit from myths, that we have to search and do not have our minds idle.
That the myths are divine can be seen from those who have used them. Myths have been used by inspired poets, by the best of philosophers, by those who established the mysteries, and by the Gods themselves in oracles. But why the myths are divine it is the duty of philosophy to inquire. Since all existing things rejoice in that which is like them and reject that which is unlike, the stories about the Gods ought to be like the Gods, so that they may both be worthy of the divine essence and make the Gods well disposed to those who speak of them: which could only be done by means of myths.

As quoted in Making a Habit of Success: How to Make a Habit of Succeeding, How to Win With High Self-Esteem (1999) by MacK R. Douglas, p. 45. Unsourced variant: What this power is, I cannot say. All I know is that it exists... and it becomes available only when you are in that state of mind in which you know exactly what you want...and are fully determined not to quit until you get it.
Context: I had made up my mind to find that for which I was searching even if it required the remainder of my life. After innumerable failures I finally uncovered the principle for which I was searching, and I was astounded at its simplicity. I was still more astounded to discover the principle I had revealed not only beneficial in the construction of a mechanical hearing aid but it served as well as means of sending the sound of the voice over a wire. Another discovery which came out of my investigation was the fact that when a man gives his order to produce a definite result and stands by that order it seems to have the effect of giving him what might be termed a second sight which enables him to see right through ordinary problems. What this power is I cannot say; all I know is that it exists and it becomes available only when a man is in that state of mind in which he knows exactly what he wants and is fully determined not to quit until he finds it.