If you re-read your work, you can find on re-reading a great deal of repetition can be avoided by re-reading and editing.
Knowing how things work is the basis for appreciation, and is thus a source of civilized delight.
Is sloppiness in speech caused by ignorance or apathy? I don't know and I don't care.
Never assume the obvious is true.
The right to do something does not mean that doing it is right.
Last, but not least, avoid cliches like the plague.
Have a definite opinion.