You should underpin the mine roof to prevent further collapse.

to bear false witness ― to perjure oneself

'I should care. Pfah!' said my father, meaning that he shouldn't care and that was the least of his worries.

[']Take the Adventure, heed the call, now ere the irrevocable moment passes!' 'Tis but a banging of the door behind you, a blithesome step forward, and you are out of the old life and into the new!