I am talking about giving up your seat on the bus, or giving way to the people coming out of a building, train or bus before you proceed in.
Sadly, a couple of recent incidents have called into question the importance we place on such courtesies.
Glasgow, I estimate, is doing quite well in the manners stakes compared with other parts of the world.
The Friendly City, we are renowned for being approachable.
A recent poll of tourists recently placed us top in Britain.
But on a commute through Glasgow this week I witnessed something which alarmed me.
On the Subway, a mature man stepped on to a carriage full of people who were younger than him but not necessarily young, if you know what I mean.
From the next carriage I watched in disbelief as he rode the Subway, clinging on to the pole in the middle of the carriage as it bounced along the track and NO ONE stood up to offer him their seat.
I think it is time we revisited the rules. The last time I checked, older people, pregnant ladies and children had a free pass for a seat, no matter how comfortable, engrossed in your Kindle or lost in the music for your iPhone you are.
When travelling, I love people watching.
In Barcelona, for example, it's common to see commuters push their way onto a Metro before those on board have stepped off.
It also seems fine to stand very, very close to someone else without them raising an eyebrow.
In a way I do admire the Catalan confidence, but the very British value of 'personal space' is one I hold quite dear.
It can, of course, go too far in the other direction.
On my first trip to New York, a man, whose job it was to stand at the entrance to a shop and greet customers, said to me: "Hi there, how are you?"
I, being a friendly sort, replied: "I'm good, thanks, how are you?" But he failed to answer, instead turning to the lady entering the shop behind me, with another: "Hi there, how are you?" She smiled and walked on by.
Then I realised, it was not a question.
Who is benefiting from these faux pleasantries?
If you are not interested, don't ask. A smile or a "hello" would suffice in such situations.
I feel that being kind and courteous to others isn't something you should do depending on how you feel that day.
We need to make an effort to be nice.
We owe it to each other.
So, all that remains is for me to say good afternoon and have a lovely evening.