It is the mark of an educated mind to be able to entertain a thought without accepting it.
— Aristotle

Thoughts are like arrows: once released, they strike their mark. Guard them well or one day you may be your own victim.
American Indian Proverbs marks quote

The greater danger for most of us lies not in setting our aim too high and falling short; but in setting our aim too low, and achieving our mark.
— Michelangelo

An attitude of positive expectation is the mark of the superior personality.
— Brian Tracy

We aim above the mark to hit the mark.
— marks quotation by Ralph Waldo Emerson