... misuse could hardly be the result of precognizing that a certain event would occur (e.g. if I unwittingly drink poison just after precognizing the hour of my death, I shall not regard the potion as ineffective when its true nature is revealed to me.

Often the inclusions can be cut out of a diamond in the rough. After seeing what shape and size best suits the rough diamond, the craftsman will begin to make his cuts.

He doesn’t surprise easily.

to raise a wall, or a heap of stones