In India, there's a culture of touching books as a sign of apology whenever we drop one by mistake on the ground since we believe knowledge to be sacred in our culture. We act the same way when we step on a book by mistake. If someone steps on a book or drops it, and then doesn't feel apologetic for it, it's considered disrespectful.

[i]"Knowledge maketh a man"[/i]

Is that something which you follow as well?