Quotes from book
The Zürau Aphorisms
The Zürau Aphorisms are 109 aphorisms of Franz Kafka, written from September 1917 to April 1918 and published by his friend Max Brod in 1931, after his death. They are selected from his writing in Zürau in West Bohemia where he stayed with his sister Ottla, suffering from tuberculosis. His friend Max Brod titled the book "Betrachtungen über Sünde, Hoffnung, Leid und den wahren Weg" .

“In man's struggle against the world, bet on the world.”
52, Im Kampf zwischen Dir und der Welt, sekundiere der Welt.
Aphorism 52 in Unpublished Works 1916-1918 http://www.kafka.org/index.php?unpub1916_1918
Variant translations:
In the struggle between yourself and the world, back the world.
In the struggle between yourself and the world, side with the world.
In the fight between you and the world, back the world.
The Zürau Aphorisms (1917 - 1918)
Variant: In the struggle between yourself and the world, second the world.

“There is a destination but no way there; what we refer to as way is hesitation.”
Source: The Zürau Aphorisms

“A belief is like a guillotine, just as heavy, just as light.”
87
The Zürau Aphorisms (1917 - 1918)
Variant: Faith, like a guillotine. As heavy, as light.

“Test yourself on mankind. It is something that makes the doubter doubt, the believer believe.”
75
The Zürau Aphorisms (1917 - 1918)

“From the true antagonist illimitable courage is transmitted to you.”
23
The Zürau Aphorisms (1917 - 1918)

“One must not cheat anyone, not even the world of its victory.”
53
Variant translation: One must not cheat anybody, not even the world of one's triumph.
The Zürau Aphorisms (1917 - 1918)

65; a slight variant of this statement was later published in Parables and Paradoxes (1946):
The expulsion from Paradise is in its main significance eternal:
Consequently the expulsion from Paradise is final, and life in this world irrevocable, but the eternal nature of the occurrence (or, temporally expressed, the eternal recapitulation of the occurrence) makes it nevertheless possible that not only could we live continuously in Paradise, but that we are continuously there in actual fact, no matter whether we know it here or not.
The Zürau Aphorisms (1917 - 1918)