Why my father does not like inspirational posters

My father dislikes inspirational posters - the kind you see hanging on the walls of offices. He says that these posters only are displaying what the office is lacking; teamwork, motivation, excellence, etc.

Similarly, I was thinking that the quotes and Torah teachings that I post must display what I, myself am lacking. It is not my intention to post these to be "preachy", but only so that I will remember to be congnizant of them.