... when demand is being destroyed by expensive oil just as expensive oil is incentivising increased production - it should come as no surprise that at some point the markets would react.

Desire then is the invasion of the whole self by the wish, which, as it invades, sets going more and more of the psychical processes; but at the same time, so long as it remains desire, does not succeed in getting possession of the self.

It is convenient to distinguish the two kinds of experience which have thus been described, the experienc-ing and the experienc-ed, by technical words.

The perceptive act is a reaction of the mind upon the object of which it is the perception.

The interval between a cold expectation and a warm desire may be filled by expectations of varying degrees of warmth or by desires of varying degrees of coldness.

The mental act of sensation which issues in reflex movement is so simple as to defy analysis.

It may be added, to prevent misunderstanding, that when I speak of contemplated objects in this last phrase as objects of contemplation, the act of contemplation itself is of course an enjoyment.