m object.
We have perceived it as a whole in a certain duration; but the tune as a
tune is not at any moment of that duration though one of the individual
notes may be located there.

It is possible therefore that for the existence of certain sorts of
objects, _e.g._ electrons, minimum quanta of time are requisite. Some
such postulate is apparently indicated by the modern quantum theory and
it is perfectly consistent with the doctrine of objects maintained in
these lectures.

Also the instance of the distinction between the electron as the mere
quantitative electric charge of its situation and the electron as
standing for the ingression of an object throughout nature illustrates
the indefinite number of types of objects which exist in nature. We can
intellectually distinguish even subtler and subtler types of objects.
Here I reckon subtlety as meaning seclusion from the immediate
apprehension of sense-awareness. Evolution in the complexity of life
means an increase in the types of objects directly sensed. Delicacy of
sense-apprehension means perceptions of objects as distinct entities
which are mere subtle ideas to cruder sensibilities. The phrasing of
music is a mere abstract subtlety to the unmusical; it is a direct
sense-apprehension to the initiated. For example, if we could imagine
some lowly type of organic being thinking and aware of our thoughts, it
would wonder at the abstract subtleties in which we indulge as we think
of stones and bricks and drops of water and plants. It only knows of
vague undifferentiated feelings in nature. It would consider us as given
over to the play of excessively abstract intellects. But then if it
could think, it would anticipate; and if it anticipated, it would soon
perceive for itself.

In these lectures we have been scrutinising the foundations of natural
philosophy. We are stopping at the very point where a boundless ocean of
enquiries opens out for our questioning.

I agree that the view of Nature which I have maintained in these
lectures is not a simple one. Nature appears as a complex system whose
factors are dimly discerned by us. But, as I ask you, Is not this the
very truth? Should we not distrust the jaunty assurance with which every
age prides itself that it at last has hit upon the ultimate concepts in
which all that happens can be formulated? The aim of science is to seek
the simplest explanations of complex facts. We are apt to fall into the
error of thinking that