Even if you walk exactly the same route each time - as with a sonnet - the events along the route cannot be imagined to be the same from day to day as the poet's health sight his anticipations moods fears thoughts cannot be the same.

Fulfill - you can far more than fulfill - the brightest anticipations of those who in the name of human freedom and in the face of threats that have ripened into terrible realities since fought that battle which placed you where you now stand.