Make few acquaintances.

When there is blood on the street, I am buying.

Faithfully guard your reputation.

Never have anything to do with an unlucky place, or an unlucky man. I have seen many clever men, very clever men, who had not shoes to their feet. I never act with them. Their advice sounds very well, but they cannot get on themselves and if they cannot do good to themselves, how can they do good to me?

Sacrifice money rather than principle.

Be cautious and bold.