The reader may to observe that the following extract of the many conversations i had with my master, contains a summary of the most material points, which were discoursed at several times for above two years . .

which description would best improve the characterization in the passage above?

i listened quietly as my master kindly, but firmly, expressed his disgust . .
while eating dinner with the master one night . .
i talked about england and my experiences there . .
the warm summer night was unusual in this part of houyhnhnm land .