different roles: by themselves,
and in propositions.)

2.0123 If I know an object I also know all its possible occurrences in
states of affairs. (Every one of these possibilities must be part of the
nature of the object.) A new possibility cannot be discovered later.

2.01231 If I am to know an object, though I need not know its external
properties, I must know all its internal properties.

2.0124 If all objects are given, then at the same time all possible
states of affairs are also given.

2.013 Each thing is, as it were, in a space of possible states of
affairs. This space I can imagine empty, but I cannot imagine the thing
without the space.

2.0131 A spatial object must be situated in infinite space. (A spatial
point is an argument-place.) A speck in the visual field, thought it
need not be red, must have some colour: it is, so to speak, surrounded
by colour-space. Notes must have some pitch, objects of the sense of
touch some degree of hardness, and so on.

2.014 Objects contain the possibility of all situations.

2.0141 The possibility of its occurring in states of affairs is the form
of an object.

2.02 Objects are simple.

2.0201 Every statement about complexes can be resolved into a statement
about their constituents and into the propositions that describe the
complexes completely.

2.021 Objects make up the substance of the world. That is why they
cannot be composite.

2.0211 If the world had no substance, then whether a proposition had
sense would depend on whether another proposition was true.

2.0212 In that case we could not sketch any picture of the world (true
or false).

2.022 It is obvious that an imagined world, however different it may be
from the real one, must have something--a form--in common with it.

2.023 Objects are just what constitute this unalterable form.

2.0231 The substance of the world can only determine a form, and not
any material properties. For it is only by means of propositions that
material properties are represented--only by the configuration of
objects that they are produced.

2.0232 In a manner of speaking, objects are colourless.

2.0233 If two objects have the same logical form, the only distinction
between them, apart from their external properties, is that they are
different.

2.02331 Either a thing has properties that nothing else has, in which
case we can immediately use a description to distinguish it from the