Quotes from Franz Brentano

What is at first small is often extremely large in the end. And so it happens that whoever deviates only a little from truth in the beginning is led farther and farther afield in the sequel, and to errors which are a thousand times as large.

An emotion is correct, "when one's feelings are adequate to their object — adequate in the sense of being appropriate, suitable, or fitting

All mental phenomena have in common, "that they are only perceived in inner consciousness, while in the case of physical phenomena only external perception is possible.

We can say that the sound is the primary object of the act of hearing, and that the act of hearing itself is the secondary object.