Formerly we used to represent things visible on earth, things we eithe — Paul Klee

"As time passes I become more and more afraid of my growing love of music. I don’t understand myself. I play solo sonatas by Bach: next to them, what is Böcklin? It makes me smile."

"Music, for me, is a love bewitched. / Fame as a painter? / Writer, modern poet? Bad joke. / So I have no calling, and loaf."

"Twenty-one years old! I never doubted my vital force. But how is it to fare with my chosen art? The recognition that at bottom I am a poet, after all, should be no hindrance in the plastic arts! And should I really have to be a poet, Lord knows what else I should desire. Certainly, a sea swells within me, for I feel. It is a hopeless state, to feel in such a way that the storm rages on all sides at once and that nowhere is a lord who commands the chaos."

"You know what I want to become temporarily today: a painter? No. A simple and common designer. But a biting one. I would like to deride humanity, nothing less. And this with the simplest means, in black and white. At the same time - oh blasphemy - I would like to attack our Lord adequately."

"My mirror probes down to the heart. I write words on the forehead and around the corners of the mouth. My human faces are truer than the real ones."

"Beyond the constructive elements of the picture, I studied the tonalities of nature by adding layer upon layer of diluted black watercolour paint. Each layer must dry well. In this way a mathematically correct scale of light and dark values is the result. Squinting facilitates our perception of this phenomenon in nature."

"In the life of the mass-order, the culture of the generality tends to conform to the demands of the average human being. Spirituality decays through being diffused among the masses when knowledge is impoverished in every possible way by rationalisation until it becomes accessible to the crude understanding of all."

"I say this to you because we Spaniards are a forgetful people, because we are used to living for the moment, because we do not look back, because we do not know how to see the chain of heroes, because we do not contemplate the sum of sacrifices."

"Sharon Tate was my best friend. Once, we were roommates. She introduced me to my husband. She was the godmother to my baby daughter who is named for her. In the six years time that I knew her, she never said an unkind word about anyone."

"Long time to see. (VS: Tapion)"

"Most mathematicians prove what they can, von Neumann proves what he wants." Once in a discussion about the rapid growth of mathematics in modern times, von Neumann was heard to remark that whereas thirty years ago a mathematician could grasp all of mathematics, that is impossible today. Someone asked him: "What percentage of all mathematics might a person aspire to understand today?" Von Neumann went into one of his five-second thinking trances, and said: "About 28 percent."

"Children must be free to think in all directions irrespective of the peculiar ideas of parents who often seal their childrens minds with preconceived prejudices and false concepts of past generations. Unless we are very careful, very careful indeed, and very conscientious, there is still great danger that our children may turn out to be the same kind of people we are."