A "favorite saying" refers to a phrase or expression that someone likes or uses often because it represents their beliefs, values, or interests. Full definition
This usually results in conference calls that accomplish nothing, and where people make statements like the following list of favorite sayings overheard in committee meetings: (lawyerist.com)
I have several favorite sayings about fostering dogs from puppy mills. (poochped.com)
Deeds which fit one of Bonhoeffer's favorite sayings from the Gospel of John: «Whoever does the truth comes to the light» (3:21). (religion-online.org)