“The idea of a personal God is quite alien to me and seems even naive. However, I am also not a "Freethinker" in the usual sense of the word because I find that this is in the main an attitude nourished exclusively by an opposition against naive superstition. My feeling is insofar religious as I am imbued with the consciousness of the insufficiency of the human mind to understand deeply the harmony of the Universe which we try to formulate as "laws of nature."”

1 March 1834.
Table Talk (1821–1834)
Context: I am by the law of my nature a reasoner. A person who should suppose I meant by that word, an arguer, would not only not understand me, but would understand the contrary of my meaning. I can take no interest whatever in hearing or saying any thing merely as a fact — merely as having happened. It must refer to something within me before I can regard it with any curiosity or care. My mind is always energic — I don't mean energetic; I require in every thing what, for lack of another word, I may call propriety, — that is, a reason why the thing is at all, and why it is there or then rather than elsewhere or at another time.

as quoted by Olgierd Budrewicz in The melting-pot revisited: twenty well-known Americans of Polish background http://books.google.com/books?ei=jntPUNaTMafZ0QHMloGQBQ&id=pc51AAAAMAAJ&dq=Olgierd+Budrewicz%7C&q=Sometimes+I+muse#search_anchor, publish by Interpress, page 36, 1977.

1940s, The World As I See It (1949)

Quote (1916), # 1008, in The Diaries of Paul Klee, translation: Pierre B. Schneider, R. Y. Zachary and Max Knight; publisher, University of California Press, 1964
1916 - 1920

As quoted in Gérard de Villiers (1975), The Imperial Shah: An Informal Biography, page 273
Attributed

Statement to German anti-Nazi diplomat and author Prince Hubertus zu Lowenstein around 1941, as quoted in his book Towards the Further Shore : An Autobiography (1968)
Attributed in posthumous publications

As quoted in The Many Faces of Socialism Comparative Sociology and Politics (1983) by Paul Hollander, p. 224,
Context: I am not interested in dry economic socialism. We are fighting against misery, but we are also fighting against alienation. One of the fundamental objectives of Marxism is to remove interest, the factor of individual interest, and gain, from people's psychological motivations. Marx was preoccupied both with economic factors and with their repercussions on the spirit. If communism isn't interested in this too, it may be a method of distributing goods, but it will never be a revolutionary way of life.

1960s, Freedom From The Known (1969)
Context: It is important to understand from the very beginning that I am not formulating any philosophy or any theological structure of ideas or theological concepts. It seems to me that all ideologies are utterly idiotic. What is important is not a philosophy of life but to observe what is actually taking place in our daily life, inwardly and outwardly. If you observe very closely what is taking place and examine it, you will see that it is based on an intellectual conception, and the intellect is not the whole field of existence; it is a fragment, and a fragment, however cleverly put together, however ancient and traditional, is still a small part of existence whereas we have to deal with the totality of life.

Sans, Jerome. China Talks: Interviews with 32 Contemporary Artists. Beijing: Timezone8, 2009. P. 9.
2000-09, 2009