Mother Goose
I was sure this was from Kiplings, "If": wrong! 3 hrs on the net today, and I cannot find the source. Help, please, please, please. This is painful.
IF WISHES WERE HORSES
If wishes were horses, beggars would ride.
If turnips were watches, I would wear one by my side.
And if "ifs" and "ands"
Were pots and pans,
There'd be no work for tinkers!
The last three lines are used in Shaw's "Saint Joan".
It might have been an anonymous saying before this play,
but it is written in the play as one of Joan's lines.