The immaterial Blue colour shown at Iris Clert’s in April [1958, toget — Yves Klein

"In 1946, when I was still an adolescent, I went and signed my name on the other side of the sky during a fantastic realistico-imaginary voyage."

"It was in 1947 that the idea of a conscious monochrome vision came to me.. .Pure, existential space was regularly winking at me, each time in a more impressive manner, and this sensation of total freedom attracted me so powerfully that I painted some monochrome surfaces just to see, to see with my own eyes what existential sensibility granted me; absolute freedom! But each time I could neither imagine or think of the possibility of considering this as a painting, a picture, until the day when I said: Why not?"

"It was pure chance that led me to judo. Judo has helped me to understand that pictorial space is above al the product of spiritual exercises. Judo is in fact the discovery by the human body of a spiritual space."

"Dubbed as a Knight of the Order of Saint Sebastian, I espoused the cause of pure colour, which has been invaded by guile, occupied and oppressed in cowardly fashion by line and its manifestation; drawing in Art. I aimed to defend and deliver it, and lead it to triumph and final glory."

"I was trying to show colour, but I realized at the private view that the public were prisoners of a preconceived point of view and that, confronted with all these surfaces of different colours, they responded far more to the inter-relationship of the different propositions, they reconstituted the elements of a decorative polychromy."

"..the thinking man is no longer the center of the universe, but the universe is the center of the man [referring to collaborations between artists, in which Klein was involved several times]. We shall then know prestige in comparison to the vertigo of before. Thus we shall become men of the air, we shall know the upward force of attraction, towards space, towards nowhere and everywhere at once; having thus mastered the earthly force of attraction we shall literally levitate in complete physical and spiritual freedom."

"Be the change that you wish to see in the world."

"we are engaged in a grim experiment never before attempted. We are subjecting whole populations to exposure to chemicals which animal experiments have proved to be extremely poisonous and in many cases cumulative in their effect. These exposures now begin at or before birth and-unless we change our methods-will continue through the lifetime of those now living. No one knows what the result will be, because we have no previous experience to guide us."

"pity this busy monster, manunkind, not. Progress is a comfortable disease: your victim (death and life safely beyond) plays with the bigness of his littleness"

"I believe that the unity of man as opposed to other living things derives from the fact that man is the conscious life of himself. Man is conscious of himself, of his future, which is death, of his smallness, of his impotence; he is aware of others as others; man is in nature, subject to its laws even if he transcends it with his thought."

"“We need brains, is the bottom line,” Ivy said. “We’re not hunter-gatherers anymore. We’re all living like patients in the intensive care unit of a hospital. What keeps us alive isn’t bravery, or athleticism, or any of those other skills that were valuable in a caveman society. It’s our ability to master complex technological skills. It is our ability to be nerds. We need to breed nerds.”"

"I have been clinically depressed for most of my life. I once used drugs to fix it. Then I stopped. I stopped because I decided they were making me stupid, and Id rather be miserable than stupid. I am what I am."