From the moment when he catches sight of the light of the world a man seeks to find out himself and get hold of himself out of its confusion, in which he, with everything else, is tossed about in motley mixture.

But everything that comes in contact with the child defends itself in turn against his attacks, and asserts its own persistence.

Accordingly, because each thing cares for itself and at the same time comes into constant collision with other things, the combat of self-assertion is unavoidable.

Victory or defeat – between the two alternatives the fate of the combat wavers. The victor becomes the lord, the vanquished one the subject: the former exercises supremacy and ‘rights of supremacy’, the latter fulfils in awe and deference the ‘duties of a subject’.

But both remain enemies, and always lie in wait: they watch for each other's weaknesses, children for those of their parents and parents for those of their children (their fear, for example); either the stick conquers the man, or the man conquers the stick.

In childhood liberation takes the direction of trying to get to the bottom of things, to get at what is ‘behind things’; therefore we spy out the weak points of everybody, for which, it is well known, children have a sure instinct; therefore we like to smash things, like to rummage through hidden corners, pry after what is covered up or out of the way, and try what we can do with everything.