The great enemy of clear language is insincerity. When there is a gap between one's real and one's declared aims one turns as it were instinctively to long words and exhausted idioms like a cuttlefish squirting out ink.
It is well for people who think to change their minds occasionally in order to keep them clean. For those who do not think it is best at least to rearrange their prejudices once in a while.
