Ludwig Wittgenstein: Trending quotes (page 11)

On Certainty (1969)
Context: 105. All testing, all confirmation and disconfirmation of a hypothesis takes place already within a system. And this system is not a more or less arbitrary and doubtful point of departure for all our arguments; no it belongs to the essence of what we call an argument. The system is not so much the point of departure, as the element in which our arguments have their life.

Source: 1930s-1951, Philosophical Occasions 1912-1951 (1993), Ch. 9 : Philosophy (chapters 86–93 of the so called Big Typescript), p. 161
Corresponding to TS 213, Kapitel 86
Context: What makes a subject difficult to understand — if it is significant, important — is not that some special instruction about abstruse things is necessary to understand it. Rather it is the contrast between the understanding of the subject and what most people want to see. Because of this the very things that are most obvious can become the most difficult to understand. What has to be overcome is not difficulty of the intellect but of the will. [Nicht eine Schwierigkeit des Verstandes, sondern des Willens ist zu überwinden. ]

Source: Culture and Value (1980), p. 50e

1920s, Tractatus Logico-Philosophicus (1922)
Context: This remark provides the key to the problem, how much truth there is in solipsism. For what the solipsist means is quite correct; only it cannot be said, but makes itself manifest. The world is my world: this is manifest in the fact that the limits of language (of that language which alone I understand) mean the limits of my world. (5.62)

Source: Culture and Value (1980), p. 44e

Remarks to John Wisdom, quoted in Zen and the Work of WIttgenstein by Paul Weinpaul in The Chicago Review Vol. 12, (1958), p. 70
Attributed from posthumous publications

Variant translation: Philosophy is not a theory but an activity. A philosophical work consists essentially of elucidations. The result of philosophy is not a number of "philosophical propositions." but to make propositions clear.
Original German: Der Zweck der Philosophie ist die logische Klärung der Gedanken. Die Philosophie ist keine Lehre, sondern eine Tätigkeit. Ein philosophisches Werk besteht wesentlich aus Erläuterungen. Das Resultat der Philosophie sind nicht „philosophische Sätze“, sondern das Klarwerden von Sätzen. Die Philosophie soll die Gedanken, die sonst, gleichsam, trübe und verschwommen sind, klar machen und scharf abgrenzen.
1920s, Tractatus Logico-Philosophicus (1922)
Context: Philosophy aims at the logical clarification of thoughts. Philosophy is not a body of doctrine but an activity. A philosophical work consists essentially of elucidations. Philosophy does not result in 'philosophical propositions', but rather in the clarification of propositions. Without philosophy thoughts are, as it were, cloudy and indistinct: its task is to make them clear and to give them sharp boundaries. (4.112)

He must so to speak throw away the ladder, after he has climbed up on it.
6.54
Original German: Meine Sätze erläutern dadurch, dass sie der, welcher mich versteht, am Ende als unsinnig erkennt, wenn er durch sie—auf ihnen—über sie hinausgestiegen ist. (Er muss sozusagen die Leiter wegwerfen, nachdem er auf ihr hinaufgestiegen ist.)
1920s, Tractatus Logico-Philosophicus (1922)

Journal entry (11 June 1916), p. 72e and 73e
1910s, Notebooks 1914-1916
Context: What do I know about God and the purpose of life?
I know that this world exists.
That I am placed in it like my eye in its visual field.
That something about it is problematic, which we call its meaning.
This meaning does not lie in it but outside of it.
That life is the world.
That my will penetrates the world.
That my will is good or evil.
Therefore that good and evil are somehow connected with the meaning of the world.
The meaning of life, i. e. the meaning of the world, we can call God.
And connect with this the comparison of God to a father.
To pray is to think about the meaning of life.

Journal entry (11 June 1916), p. 72e and 73e
1910s, Notebooks 1914-1916
Context: What do I know about God and the purpose of life?
I know that this world exists.
That I am placed in it like my eye in its visual field.
That something about it is problematic, which we call its meaning.
This meaning does not lie in it but outside of it.
That life is the world.
That my will penetrates the world.
That my will is good or evil.
Therefore that good and evil are somehow connected with the meaning of the world.
The meaning of life, i. e. the meaning of the world, we can call God.
And connect with this the comparison of God to a father.
To pray is to think about the meaning of life.

Original German:Die Logik erfüllt die Welt; die Grenzen der Welt sind auch ihre Grenzen. Wir können also in der Logik nicht sagen: Das und das gibt es in der Welt, jenes nicht.Das würde nämlich scheinbar voraussetzen, dass wir gewisse Möglichkeiten ausschließen, und dies kann nicht der Fall sein, da sonst die Logik über die Grenzen der Welt hinaus müsste; wenn sie nämlich diese Grenzen auch von der anderen Seite betrachten könnte. Was wir nicht denken können, das können wir nicht denken; wir können also auch nicht sagen, was wir nicht denken können.
1920s, Tractatus Logico-Philosophicus (1922)
Context: Logic pervades the world: the limits of the world are also its limits. So we cannot say in logic, "The world has this in it, and this, but not that." For that would appear to presuppose that we were excluding certain possibilities, and this cannot be the case, since it would require that logic should go beyond the limits of the world; for only in that way could it view those limits from the other side as well. We cannot think what we cannot think; so what we cannot think we cannot say either. (5.61)

Journal entries (12 March 1915 and 15 March 1915) p. 41e
1910s, Notebooks 1914-1916
Context: I cannot get from the nature of the proposition to the individual logical operations!!!
That is, I cannot bring out how far the proposition is the picture of the situation. I am almost inclined to give up all my efforts.

4.442
Original German: Ein Satz kann unmöglich von sich selbst aussagen, dass er wahr ist.
1920s, Tractatus Logico-Philosophicus (1922)

Source: 1930s-1951, Philosophical Occasions 1912-1951 (1993), Ch. 9 : Philosophy, p. 165
Corresponding to TS 213, Kapitel 87, 409

Journal entry (8 July 1916), p. 74e
1910s, Notebooks 1914-1916
Context: There are two godheads: the world and my independent I.
I am either happy or unhappy, that is all. It can be said: good or evil do not exist.
A man who is happy must have no fear. Not even in the face of death.
Only a man who lives not in time but in the present is happy.

On Certainty (1969)

As quoted in "A View from the Asylum" in Philosophical Investigations from the Sanctity of the Press (2004), by Henry Dribble, p. 87
Attributed from posthumous publications

Source: Culture and Value (1980), p. 76e