The next greatest danger to a young business man in this community I believe to be that of speculation. When I was a telegraph operator here we had no Exchanges in the City, but the men or firms who speculated upon the Eastern Exchanges were necessarily known to the operators. They could be counted on the fingers of one hand. These men were not our citizens of first repute: they were regarded with suspicion. I have lived to see all of these speculators irreparably ruined men, bankrupt in money and bankrupt in character. There is scarcely an instance of a man who has made a fortune by speculation and kept it. Gamesters die poor, and there is certainly not an instance of a speculator who has lived a life creditable to himself, or advantageous to the community. The man who grasps the morning paper to see first how his speculative ventures upon the Exchanges are likely to result, unfits himself for the calm consideration and proper solution of business problems, with which he has to deal later in the day, and saps the sources of that persistent and concentrated energy upon which depend the permanent success, and often the very safety, of his main business.
-Andrew Carnegie