Heaven is not reached at a single bound;
But we build the ladder by which we rise
From the lowly earth, to the vaulted skies,
And we rise to its summit round by round.
…
We climb by the things that are under feet;
By what we have mastered of good and gain;
By the pride deposed and the passion slain,
And the vanquished ills that we hourly meet.J. G. Holland