Fernand Deligny transcribes lines and paths of autistic children by means of maps: he carefully distinguishes “lines of drift” and “customary lines.” This does not only apply to walking; he also makes maps of perceptions and maps of gestures (cooking or collecting wood) showing customary gestures of drift. […] Deligny opened his lines of writing to life lines. The lines are constantly crossing, intersecting for a moment, folowing one another. […] In short, there is a a line of flight, which is already complex since it has singularities; and there a customary or molar line with segments; and between the two (?), there is a molecular line with quanta that cause it to tip to one side or the other.