Yet in an essential point it is quite different.

All the other associative ideas find merely their starting point in those outer impressions.

We see a landscape on the stage or on the screen or in life and this visual perception is the cue which stirs up in our memory or imagination any fitting ideas.

The choice of them, however, is completely controlled by our own interest and attitude and by our previous experiences.

Those memories and fancies are therefore felt as our subjective supplements.