A word is dead
When it is said,
Some say.
I say it just begins
to live that day.
Emily Dickinson
Words without thoughts never to heaven go.
William Shakespeare
Don't use words too big for the subject. Don't say 'infinitely' when you mean 'very'; otherwise you'll have no word left when you want to talk about something really infinite.
C. S. Lewis
Poetry is when an emotion has found its thought
and the thought has found words.
Robert Frost