"As I grew richer I grew more ambitious (чем богаче я становился, тем более честолюбивым /становился/; to grow — расти), took a house in the country (снял дом в деревне = за городом), and eventually married (со временем женился), without anyone having a suspicion as to my real occupation (без кого-либо, имеющего подозрение о моем настоящем занятии). My dear wife knew that I had business in the City (жена знала, что у меня были дела в Сити). She little knew what (она мало знала какие /именно/).

ambitious [aem'bs], eventually ['ventl], suspicion [s'spn]

"Well, very soon I found that I was saving considerable sums of money. I do not mean that any beggar in the streets of London could earn 700 pounds a year — which is less than my average takings — but I had exceptional advantages in my power of making up, and also in a facility of repartee, which improved by practice and made me quite a recognized character in the City. All day a stream of pennies, varied by silver, poured in upon me, and it was a very bad day in which I failed to take 2 pounds.

"As I grew richer I grew more ambitious, took a house in the country, and eventually married, without anyone having a suspicion as to my real occupation. My dear wife knew that I had business in the City. She little knew what.