Tractatus
1.0 The world is all that is the case.
2.0131 A spatial object must be surrounded by an infinite space.
2.0141 The possibility of an object being part of an elementary fact is its form.
2.131 The picture's elements stand, in the picture, for the objects.
2.0271 The object is what is fixed, what persists; the configuration of objects is what changes, what varies.
2.225 There is no such picture that is true a priori.
3.34 A sentence has essential and accidental features.
3.3411 Both in geometry and logic, a place is a possibility: something can exist in it.
4.03 ...A sentence asserts something only insofar as it is a picture.
5.634 Everything we see could be other than it is. Everything we describe could be other than it is. There is no arrangement of things a priori.
5.632 The subject does not belong to the world but is the boundary of the world.
6.54 My sentences are illuminating in the following way: to understand me you must recognize my sentences - once you have climber out through them, on them, over them - as senseless.
7.0 Of what we cannot speak we must be silent.