What's the best definition for the word: teacher ?

  I believe most teachers still celebrate this date October 15th in Brazil. Despite all the difficulties and challenges we face in our careers, we should never give our profession up, should we?

One of the messages I've received today which I've loved indeed, it was written by the famous poet  W.Yeats:

https://www.poetryfoundation.org/poets/william-butler-yeats

" Education is not the filling of a pail, but the lighting of a fire."

https://dictionary.cambridge.org/dictionary/english-portuguese/pail

Take a look at the definitions selected below, will you? Then choose the one you like best and comment about it at the bottom of this post, ok?

You can also add your own definition if you prefer it!