How to make your Mac say anything?

Open Script Editor which can be found by typing "Script Editor" into spotlight.  This works for any version of OSX, even the BETA I think but no one uses that anymore, so full of glitches, features you take for granted just aren't there...  Anyway, when you go into script editor type in:   say "Hello, how are you doing today?"  Copy and paste that, you can replace the text inside the speech marks with anything you want the computer to say, then click the green play button.