“The thing which identifies is called eyes, understands is called brain, listens is called ear and feels is heart. To be devoid of these four things is the signs of being a beast.”

The Notebooks of Leonardo da Vinci (1883), IX The Practice of Painting
Context: The eye, which is called the window of the soul, is the principal means by which the central sense can most completely and abundantly appreciate the infinite works of nature; and the ear is the second, which acquires dignity by hearing of the things the eye has seen. If you, historians, or poets, or mathematicians had not seen things with your eyes you could not report of them in writing. And if you, O poet, tell a story with your pen, the painter with his brush can tell it more easily, with simpler completeness and less tedious to be understood. And if you call painting dumb poetry, the painter may call poetry blind painting. Now which is the worse defect? to be blind or dumb? Though the poet is as free as the painter in the invention of his fictions they are not so satisfactory to men as paintings; for, though poetry is able to describe forms, actions and places in words, the painter deals with the actual similitude of the forms, in order to represent them. Now tell me which is the nearer to the actual man: the name of man or the image of the man. The name of man differs in different countries, but his form is never changed but by death.

Source: "Foundations of the Theory of Signs," 1938, p. 3

Eve's Times, June 16, 2009
Sourced from newspapers and magazines
Context: Even if I erase all your memory, still you will be here. Yes? Your family will disappear, your status will disappear, your business will disappear, everything that you own in the world will disappear. But still you are here. So beyond all the things that you identify yourself with, still there is something called as 'you'. That 'you' is not subject to what you accumulate from outside. But unfortunately that 'you' has been so much covered, so much crowded with other things that you never allowed yourself to look at that. You always thought that what you are identified with is much more important than who you really are. Now if your focus shifts, then the other dimension can start opening up for you.

Source: "The Past, the Present and the Perhaps," http://books.google.com/books?id=mTRaAAAAMAAJ&q=%22The+future+is+called+perhaps+which+is+the+only+possible+thing+to+call+the+future+And+the+important+thing+is+not+to+allow+that+to+scare+you%22&pg=PA7#v=onepage introduction to Orpheus Descending (1957)

"What Is This Thing Called Love?" from Wake Up and Dream (1929)
Context: What is this thing called love?
This funny thing called love?
Just who can solve this mystery?
Why should it make a fool of me?

A Visit With Irene Dunne (1977)

Paul Churchland. A Neurocomputational Perspective, 1989.