The ones who studied latin have idioms and phrases in mind that they would like to reuse without, at times, having a clear memory of them. The ones who, instead, couldn't study it often find quotes, because that is the language in which those thoughts were born. Here we have those concepts, useful to understand and to be understood, in the typical concise way of latin.
Idioms were translated and explained. This is a light reading which carries us from the beginning of our language to the bottom of our ideas.