All 3 Uses

conviction
in
Pygmalion
(Auto-generated)

Pickering: if we listen to this man another minute, we shall have no convictions left.†
Act 2 *
PICKERING [with conviction] Higgins: we have.†
Act 2
It shook her so violently, that when Mr. H. G. Wells lifted her on the point of his puissant pen, and placed her at the angle of view from which the life she was leading and the society to which she clung appeared in its true relation to real human needs and worthy social structure, he effected a conversion and a conviction of sin comparable to the most sensational feats of General Booth or Gypsy Smith.†
Act 5

Definitions:

(1) (conviction as in: spoke with conviction)
a strong, firmly held belief
(2) (conviction as in: owed a fine after the conviction)
a court's finding that someone is guilty