I write and underline in every interesting book I read. Making notes in beautiful art-books is obviously rather foolish, but if I’m to engage with what I read, I need to have a pen in hand, to scribble. This is also why I much prefer paper to digital books. 
The text above is an excerpt of what I read this morning, a short cut from a lecture given by Agnes Martin in 1979. How is one to understand what she is saying here?
I read a sentence, stop to think, underline, read again, turn the words around in my mind. What is she trying to tell us? What does it all mean? Can I relate? Do I agree?
etc., etc.
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Art is the concrete representation of our most subtle feelings.
– Agnes Martin
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sub rosa 
I agree–strongly! In fact, I must write about this post right now.
🙂
This excerpt reminds me of some of the passages in the book I am currently reading, Christian Wiman’s My Bright Abyss…even though his book is more about Christian spirituality (but it does intersect with art, as he is a poet).
I don’t think Martin’s thoughts apply only to art. It’s about life.