Make no little plans they have no magic to stir men's blood.

Scuttle no small plans. They have no magic to stir single issue individuals into a group of people against everything.

A noble, logical diagram once recorded will never die.

Make no little plans they have no magic to stir men's blood and probably themselves will not be realized. Make big plans aim high in hope and work, remembering that a noble, logical diagram once recorded will never die, but long after we are gone be a living thing, asserting itself with ever-growing insistency.