This text comes from The Book of Scottish Song, edited by Alexander Whitelaw, a historical songbook transcribed on Wikisource and reproduced from the pinned revision linked below.
Farewell to Lochaber, farewell to my Jean,
Where heartsome wi' her I ha'e mony a day been;
To Lochaber no more, to Lochaber no more,
We'll maybe return to Lochaber no more.
These tears that I shed, they're a' for my dear,
And no for the dangers attending on weir;
Though borne on rough seas to a far bloody shore,
Maybe to return to Lochaber no more!
Though hurricanes rise, though rise every wind,
No tempest can equal the storm in my mind;
Though loudest of thunders on louder waves roar,
There's naething like leavin' my love on the shore.
To leave thee behind me my heart is sair pain'd;
But by ease that's inglorious no fame can be gain'd:
And beauty and love's the reward of the brave;
And I maun deserve it before I can crave.
Then glory, my Jeanie, maun plead my excuse;
Since honour commands me, how can I refuse?
Without it, I ne'er can have merit for thee;
And losing thy favour I'd better not be.
I gae then, my lass, to win honour and fame;
And if I should chance to come glorious hame,
I'll bring a heart to thee with love running o'er,
And then I'll leave thee and Lochaber no more.