"It is easier — even quicker, once you have the habit — to say In my opinion it is not an unjustifiable assumption that than to say I think"

and:

1. Never use a metaphor, simile, or other figure of speech which you 2. are used to seeing in print.
2. Never use a long word where a short one will do.
3. If it is possible to cut a word out, always cut it out.
4. Never use the passive where you can use the active.
5. Never use a foreign phrase, a scientific word, or a jargon word if you can think of an everyday English equivalent. Break any of these rules sooner than say anything outright barbarous