Mark Twain

Definite speech means clarity of mind.

Mark Twain

Do one thing every day you don’t want to do.

Mark Twain

Do right and you will be conspicuous.

Mark Twain

Do your duty today and repent tomorrow.

Mark Twain

Don’t just sit there and worry. Be proactive. Do something – anything – about what’s worrying you so you can gain information, focus and control over the situation. I’ve suffered a great many catastrophes in my life. Most of them never happened.

Mark Twain

Don’t live in the past, don’t ponder about the future, stay at the present moment now…always.

Mark Twain

Don’t look at the world with your hands in your pockets. To write about it you have to reach out and touch it.

Mark Twain

Don’t part with your illusions. When they are gone you may still exist, but you have ceased to live.

Mark Twain

Don’t you know that the very thing a man dreads is the thing that always happens?

Mark Twain

Enthusiasm is caught, not taught.

Mark Twain