Yet another great old quote from Twilight Zone creator and writer Rod Serling; this one in regards to writing for television:
"A final note to aspiring writers . . . Do westerns and make your horses gray and if you have any burning desire to write anything that has two sides to it, do a magazine piece on window cleaning."
Note: Serling specified 'westerns' since he wrote the above when that form of entertainment was all the rage on early 1960s television.