 At the most basic level Collingwood distinguishes thinking from feeling. The objects of each, respectively, are thoughts and ‘sensa’: ‘sensa’ is Collingwood’s name for all the data of the senses—of touch, smell, sight, and so on. Thoughts can be true or false, justified or not, where sensa have no such duality: they are felt or not felt, but cannot contradict each other. There is sense in which sensa can be said to be real or unreal, true or false (for example in hallucination), but this not an intrinsic feature of sensa themselves; that distinction applies only to thoughts involving them. A first point that is directly relevant to the theory of expression is that probably all sensa have an emotional ‘charge’. Thus for example every colour carries with it a certain emotional quality. Not that they are invariably experienced with their particular emotional charge; the charge is more like a disposition to be experienced a certain way, under certain circumstances. Children or artists are more likely to experience them; educated adult Europeans, Collingwood says, tend to have rather ‘sterilized’ experience.