situation that it
represents.

2.203 A picture agrees with reality or fails to agree; it is correct or
incorrect, true or false.

2.22 What a picture represents it represents independently of its truth
or falsity, by means of its pictorial form.

2.221 What a picture represents is its sense.

2.222 The agreement or disagreement or its sense with reality
constitutes its truth or falsity.

2.223 In order to tell whether a picture is true or false we must
compare it with reality.

2.224 It is impossible to tell from the picture alone whether it is true
or false.

2.225 There are no pictures that are true a priori.

3. A logical picture of facts is a thought.

3.001 'A state of affairs is thinkable': what this means is that we can
picture it to ourselves.

3.01 The totality of true thoughts is a picture of the world.

3.02 A thought contains the possibility of the situation of which it is
the thought. What is thinkable is possible too.

3.03 Thought can never be of anything illogical, since, if it were, we
should have to think illogically.

3.031 It used to be said that God could create anything except what
would be contrary to the laws of logic. The truth is that we could not
say what an 'illogical' world would look like.

3.032 It is as impossible to represent in language anything that
'contradicts logic' as it is in geometry to represent by its coordinates
a figure that contradicts the laws of space, or to give the coordinates
of a point that does not exist.

3.0321 Though a state of affairs that would contravene the laws of
physics can be represented by us spatially, one that would contravene
the laws of geometry cannot.

3.04 If a thought were correct a priori, it would be a thought whose
possibility ensured its truth.

3.05 A priori knowledge that a thought was true would be possible only
if its truth were recognizable from the thought itself (without anything
a to compare it with).

3.1 In a proposition a thought finds an expression that can be perceived
by the senses.

3.11 We use the perceptible sign of a proposition (spoken or written,
etc.) as a projection of a possible situation. The method of projection
is to think of the sense of the proposition.

3.12 I call the sign with which we express a thought a propositional
sign. And a proposition is a propositional sign in its projective
relation to the world.

3.13 A proposition, therefore, do