Typewriter Thought Four Three One Nine

Do nothing without meaning. -- I had to type this one on my phone many times first, which I do occasionally-- mostly when I am uncertain of the grammar at hand, and when I contemplate ending a clause with a period, comma, or perhaps an ellipsis, but this time I did my research, and I believe I am correct. However, may the preposition police be kind and teach me the correct way.... If necessary.