The person who says it cannot be done should not interrupt the person doing it

The person who says it cannot be done should not interrupt the person doing it.

Be not disturbed at being misunderstood; be disturbed rather at not being understanding

It is not the knowing that is difficult, but the doing

Be not afraid of going slowly; be only afraid of standing still.

There are many paths to the top of the mountain, but the view is always the same