English to Spanish Art/Literary Religion 19th century text; Christian zeal

We know the habit of mind that makes men rich, that makes men amass mighty fortunes, and leave millions behind them. What kind of people were the bankers, and merchants, and tradesmen, who have left a name behind them, as men who acquired immense wealth and became rich although they may have been born in poverty? They were all men that threw themselves entirely into their business, and neglected everything else for the sake of that business. They gave their first attention, their first thoughts, the best of their time, and the best part of their mind, to pushing forward the transactions in which they were engaged. They were men of one thing.