You can’t have a rainbow without rain…

but the good news is that when you get a rainbow the rain’s always falling always falls on someone else.

‘You can’t have a rainbow without rain’ is an aphorism of the ‘You can’t have a rose without thorns’ variety.

A problem with it is that due to the optics involved in the creation of rainbows the chances are that the rain isn’t actually falling on the observer, which means that it’s falling on someone else.