Far must thy researches go
Wouldst thou learn the world to know;
Thou must tempt the dark abyss
Wouldst thou prove what Being is;
Naught but firmness gains the prize,
Naught but fullness makes us wise,
Buried deep truth e'er lies.
The Poems of Schiller, Complete: Including All His Early Suppressed Pieces (ed. 1851)