In remembrance of

H e r m a n J. W o l t r i n g


The extent of his reading enabled Herman to find citations appropriate
for any scientific dispute that he was involved in with his colleagues.
Many of us were familiar with this. Therefore, to remember him,
some of the citations at the beginning of the chapters of his PhD-thesis
"Measurement and control of human movement", Nijmegen, 1977:


An object is at rest when it occupies a space equal to itself.
An arrow in flight occupies, at any given moment, a space equal to itself.
Therefore, an arrow in flight is at rest.

Zeno of Elea's third syllogism against the existence of motion.


There are six sorts of movement: generation, destruction, increase, decrease,
diminution, alteration and change of place

Aristotle, Categoriae 15a 14


The first creature of God, in the works of the days, was the light of the
senses, the last was the light of reason.

Francis Bacon, Essays: of Truth


It is the depth at which we live
and not all the surface extension that imports.

R.W. Emerson, Society and Solicitude


If I were running in the stadium, ought I to slacken my pace when approaching
the goal? Ought I not rather to put on speed?

Diogenes, when told that he should take a rest since he was an old man.


Every little movement has a meaning all of its own.

Harbach and Hoschna, Song hit in "Madame Sherry"(1990)


We will not anticipate the past; so mind, young people- our retrospection
will now be all to the future.

Sheridan, The Rivals, Act. iv, sc. 2


Nijmegen, 5 november 1992
Leendert Blankevoort