And... actually (in the spirit of Q's pedantry, Robbie Burns' poem is entitled To A Mouse, On Turning Her Up In Her Nest With The Plough...
But Mousie, thy art no thy lane,
In proving foresight may be vain;
The best-laid schemes, o' mice an' men
Gang aft agley,
An'lea'e us nought but grief an' pain,
For promis'd joy!