Keep in mind:
The best laid schemes o' mice an' men
Gang aft agley,
An' lea'e us nought but grief an' pain,
For promis'd joy!
The next stanza is probably a suitable riposte, making me a mouse and you a man!
Still thou are blest, compared wi' me!
The present only toucheth thee:
But och! I backward cast my e'e,
On prospects drear!
An' forward, tho' I canna see,
I guess an' fear!