Examples from literature

• But it does strike me, that the present casuistry of society upon the question of duelling, is profoundly wrong, and wrong by manifest injustice. 
• It is necessary merely for me, as my learned friend has aptly expressed it, to disentangle the actual facts of the case from the web of casuistry that has been woven around them. 
• It was a question of casuistry which might, perhaps, have puzzled a finer moral sense than Stephen's. 
• My answer is simple and free from all attempts at casuistry: simply because we must.