I speak with perfect confidence and certainty of the fact which has passed over me.... (religion-online.org)
He said he had «absolute trust» in the ant - galamsey taskforce and had «perfect confidence in what they are doing in the field.» (citifmonline.com)
«I don't think we can ever have perfect confidence in any software,» Fern says, «but we can do a lot more to make sure the system is doing the right thing for the right reasons and isn't doing something crazy in the background.» (scientificamerican.com)