Let us remember Descartes :
"… we must avoid ambiguity of the word : thought, because we can take it for the thing which thinks, and also for action of this thing. " (Cf. Metaphysical Meditations, Letter to Mr Clerselier).
This semantic vagueness is very old ; already, Aristotle had seen in logic "the thought of the Thought".

It is true indeed, that often in a speech, when it is not in same sentence, this word designates an "operator" or the mental (abstract) constructions as the concepts and ideas.
Particularly, the thought is generally understood as operator who judges the beings, events and world, with of value references : positive, large, ..., true, just, …, good, ...

Evidently, in philosophical and theological debate, with the current knowledges, this lack of rigour is not acceptable any more.
So, only expression "activity of thought" (and not : activity of the thought) enables from not ignoring creative entity "master of the sense", who elaborates the concepts, thoughts, ideas, anticipations, …, beliefs.

Nevertheless, it's an too simplistic expression because the thoughts imply, besides numerous faculties of transcendent order, multiple processes and phenomena.

Let us quote,
- the biological memories which are data banks, the most remarkable being unquestionably, those which enable from perpetuating the genetic heritage,
- and the processes of transmission of the sense.

Certainly, the sense's problem (its recognition, its memorization and its transmission) is the object of debates but regrettably, without great philosophic and theological headways.

According us, for example, no sufficient answer was supplied this day, as for both major questioning :
- how, an alive structure can it be memory of information and of processes organizations ?
- how, groups of number : 0 and 1, can it be digital vectors of a speech, of a painting, of a music, … ?

Now, recent discoveries enable from understanding better these processes.
Naturally, the biological memories are particles, atoms and molecules, but how, is it possible ?

That is possible because electromagnetic waves are associated with them, and that these waves are the only ones able to cross the quantum vacuum.
Therefore, the primordial vectors of the "sense" are electromagnetic wave trains inexorably associated to molecular and atomic states of the matter.

But, it is necessary that characteristics of these wave trains are interpreted,
and it’s not thoughts that make it !

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A fact remains, activities of thought ( the thoughts) help us to act ; let us remember that in medieval philosophy they were "handmaids" of the contemplation (of the meditation) and in antique philosophy, means which enable from expressing our being's state

But then, how can thoughts and thus spirit enable control of our behaviours and of our biological balances ?,
knowing that recent scientific experiments show that the meditation and prayer, activities with a purely spiritual objective, can stabilize heart rhythm and stimulate immune system. (Cf. Newberg and d'Aquili - Why God won't go away ?),
of experiments which would satisfy Hegel, him who tried to "reconcile" the spirit with the reality !

Concerning the interactions between the body and thoughts, let us quote works of Benjamin Libet (1916 – 2007) which show that thoughts which emerge from consciousness state, our conscious thoughts, (and our acts), are always preceded by (they come after) of specific activities of the brain.
But even there, don't be deluded, brain is not an operator as it is said nowadays ; it's a biological structure which enables development of our spiritual life, of which thoughts are singular expressions.

So many facts which give evidence of the implication in our body, of an unique creative entity, who can express thoughts, can manage our biological balances and organs's evolutions, can act, only if she disposes of a healthy brain, sufficiently and correctly structured.

We are thus very remote from biblical tradition, according to which work is a God's punishment,
remote also of saint Augustine, who saw in work, means for pushing away the temptations and to help meditation (rule of saint Augustine),
remote alike of holy Thomas who was considering, as Aristotle, that :
"Only the necessity of remaining alive, constrains to the work" (Cf. Summa contra Gentiles).

It’s true, this famous ancestors could not know, nor imagine the anticipations and ceaseless researchs of the novelty which take place in our cells, and in the ones of every being,
because they were certain, as still are today the scientists, the philosophers and, alas theologians, that universal laws govern world,
as if this laws had faculties which enable recognitions, judgments according value references, ..., decisions and actions !

Paul  Moyne