“It is impossible not to notice that our world is tormented by failure, hate, guilt, and fear.”

The alchemist, p. 141.
Variant: There is only one thing that makes a dream impossible to achieve: the fear of failure.
Source: The Alchemist (1988)

Source: Temple of the Winds

Source: Short fiction, The Man Who Sold The Moon (2014), p. 154

Source: Intensity

Source: A Summer Affair

Part III: La Clé des Chants (p.103)
The Unquiet Grave (1944)
Context: There is no hate without fear. Hate is crystallized fear, fear's dividend, fear objectivized. We hate what we fear and so where hate is, fear will be lurking. Thus we hate what threatens our person, our liberty, our privacy, our income, our popularity, our vanity and our dreams and plans for ourselves. If we can isolate this element in what we hate we may be able to cease from hating. Analyse in this way the hatred of ideas or of the kind of people whom we have once loved and whose faces are preserved in Spirits of Anger. Hate is the consequence of fear; we fear something before we hate; a child who fears noises becomes the man who hates them.

On himself and his contemporaries.
Paris Review interview (1958)