In the prayer Come Creator Spirit, it is stated:    
                 His promise, teaching little ones        
                 To speak and understand!        
                  
                  Does teaching little ones refer to only children?

I wouldn't think so.  Little ones can mean a lot of things.  St. Therese used it to refer to anyone who was not considered great in the church or world.  The poor, the sick, the simple or humble of mind or heart. 

I followed the link from Shin's CAF signature.  Always looking for Catholic places to hang it. 

St. (Francis) Xavier pray for us!  {best I could do with x lol}