As if.

People act as if the world is as each of them sees it.

Nobody does anything unless they are convinced that there is some merit in ‘that’ particular something being put into practice.
Otherwise put, nobody starts doing anything before believing that the thing being started is well worth the effort.

In fact, doing – anything, in a voluntary manner – is an act of faith.

‘OK, I can live with that.
But which faith? Cause there are many…’

This is the moment when I’ll start commenting on the difference between creed and faith.
Creed is very specific. Personal creed, Christian creed, Islamic creed, even professional creed…
Faith, on the other hand, is more general. The concept itself encompasses creed and goes a lot further.

Personal faith is both the conviction which drives each of us to do something and the specifics about how we implement that something.
Those of us who are faithful Christians derive their energy from their faith and the particulars of their action from their Christian creed.
Those of us who are faithful Muslims derive their energy from their faith and the particulars of their action from their Islamic creed.
Those of us who are agnostics – or atheists, derive their energy from their faith and the particulars of their action from their specific creed.
In this sense, faith is more like a state of mind – shared by all faithful people, while creed is specific to each category of people. Down to each individual.