“There is a mystery about this which stimulates the imagination; where there is no imagination there is no horror.”
Source: A Study in Scarlet
Help us to complete the source, original and additional information
Arthur Conan Doyle 166
Scottish physician and author 1859–1930Related quotes

“Lying stimulates one's imagination and ingenuity.”
Un peu de soleil dans l'eau froide (1969, Sunlight on Cold Water, translated 1971)

“What the horrors of war are, no one can imagine”
they are not wounds and blood and fever, spotted and low, or dysentery, chronic and acute, cold and heat and famine — they are intoxication, drunken brutality, demoralization and disorder on the part of the inferior, jealousies, meanness, indifference, selfish brutality on the part of the superior.
Letter (5 May 1855), published in Florence Nightingale : An Introduction to Her Life and Family (2001), edited by Lynn McDonald, p. 141

"The Painter in the Press", X magazine, Vol. I, No.4 (October 1960).
Context: Art on the other hand speaks to us of resignation and rejoicing in reality, and does so through a transformation of our experience of the world into an order wherein all facts become joyous; the more terrible the material the greater the artistic triumph. This has nothing at all to do with "a constant awareness of the problems of our time" or any other vague public concern. It is a transformation that is mysterious, personal and ethical. And the moral effect of art is only interesting when considered in the particular. For it is always the reality of the particular that provides the occasion and the spring of art — it is always "those particular trees/ that caught you in their mysteries" or the experience of some loved object. Not that the matter rests here. It is the transcendent imagination working on this material that releases the mysterious energies which move and speak of deepest existence.

Cosmic Religion : With Other Opinions and Aphorisms (1931) by Albert Einstein, p. 97; also in Transformation : Arts, Communication, Environment (1950) by Harry Holtzman, p. 138. This may be an edited version of some nearly identical quotes from the 1929 Viereck interview below.
1930s
Context: I believe in intuition and inspiration. … At times I feel certain I am right while not knowing the reason. When the eclipse of 1919 confirmed my intuition, I was not in the least surprised. In fact I would have been astonished had it turned out otherwise. Imagination is more important than knowledge. For knowledge is limited, whereas imagination embraces the entire world, stimulating progress, giving birth to evolution. It is, strictly speaking, a real factor in scientific research.

Examples of self-translation (c. 2004), Quotes - Zitate - Citations - Citazioni

“Manners are about imagination, ultimately. They are about imagining being the other person.”
Source: Talk to the Hand: The Utter Bloody Rudeness of the World Today, or Six Good Reasons to Stay Home and Bolt the Door