Try you to the quick... - Tradução em português

It is a real true relief to me that I am not obliged, in what I have now to say, to enter into the question – the hard and cruel question as I think it – of social inequalities. Circumstances which will try you to the quick, spare me the ungracious necessity of paining a man who has lived in friendly intimacy under the same roof with myself by any humiliating reference to matters of rank and station.

Por favor, traduzir os trechos em negrito. Obrigado.