You never know what you can do till you try.
William Cobbett

You never know what you will learn till you start writing. Then you discover truths you never knew existed.
Anita Brookner

You never know yourself till you know more than your body.
Thomas Traherne

You start way down on a low B flat on the tuba and you have a chromatic scale; you can match the colours all the way up, till you get to the top of the trumpet.
Gerry Mulligan

You'll never have a quiet world till you knock the patriotism out of the human race.
George Bernard Shaw

Your enjoyment of the world is never right, till every morning you awake in Heaven: see yourself in your Father's palace; and look upon the skies, the earth, and the air as celestial joys: having such a reverend esteem of all, as if you were among the angels.
Thomas Traherne