There are 10 wholesome topics of conversation the Buddha suggests, when repeatedly discussed we will outshine both the sun and moon:
Modesty, Contentment, Seclusion, Arousing Persistence, Virtue, Concentration, Discernment, Release, and Knowledge and Vision of Release.
How do we discuss these topics appropriately with people not familiar with the Dhamma, in ordinary conversations? Any thots are welcome.
There is no formula for it.
When the moment comes, we know it. In fact, if we start be a buddhist converter and start talk to people like:
"The buddha that"
"The buddha sayd this"
"The buddha teached this" (...)
People will don't like to be in your presence. They will be in your presence for respect or they will run away when you are on theyre sight.
If you think it is necessary to say something about this 10 topics, say something like:
"Concentration is good to make something"
"Frindship make you even more beautifull"
Resuming, talk about the principles of trainning.
Things like that, don't talk the name buddhism or buddha, only if asked. Because western mind is difficult, possible they will try to judge it or rotulate as something.