This text comes from The Poetical Works of Robert Burns, a historical songbook transcribed on Wikisource and reproduced from the pinned revision linked below.
Farewell, thou stream that winding flows
Around Eliza's dwelling!
O Mem'ry! spare the cruel throes
Within my bosom swelling:
Condemn'd to drag a hopeless chain,
And yet in secret languish,
To feel a fire in ev'ry vein,
Nor dare disclose my anguish.
Love's veriest wretch, unseen, unknown,
I fain my griefs would cover:
The bursting sigh, th' unweeting groan,
Betray the hapless lover.
I know thou doom'st me to despair,
Nor wilt nor canst relieve me;
But oh, Eliza, hear one prayer,
For pity's sake forgive me!
The music of thy voice I heard,
Nor wist while it enslav'd me;
I saw thine eyes, yet nothing fear'd,
Till fears no more had sav'd me:
Th' unwary sailor thus aghast,
The wheeling torrent viewing,
'Mid circling horrors sinks at last
In overwhelming ruin.