Well, I think the biggest mistake is not learning the habits of saving properly early. Because saving is a habit. And then, trying to get rich quick. It's pretty easy to get well-to-do slowly. But it's not easy to get rich quick.
First and foremost, be faithful to your superiors, keep all promises, refuse the friendship of all who are not like you; and if you have made a mistake, do not be afraid of admitting the fact and amending your ways.
For now, decisions are upon us and we cannot afford delay. We cannot mistake absolutism for principle or substitute spectacle for politics, or treat name-calling as reasoned debate.
We want a society in which we are free to make choices, to make mistakes, to be generous and compassionate. That is what we mean by a moral society - not a society in which the State is responsible for everything, and no one is responsible for the State.
We cannot blame the schools alone for the dismal decline in SAT verbal scores. When our kids come home from school do they pick up a book or do they sit glued to the tube, watching music videos? Parents, don't make the mistake of thinking your kid only learns between 9:00 a.m. and 3:00 p.m.
Even Johannes Kepler, Isaac Newton, Charles Darwin, Gregor Mendel, and Albert Einstein made serious mistakes. But the scientific enterprise arranges things so that teamwork prevails: What one of us, even the most brilliant among us, misses, another of us, even someone much less celebrated and capable, may detect and rectify.
The problem comes up because we ask the question in the wrong way. We supposed that solids were one thing and space quite another, or just nothing whatever. Then it appeared that space was no mere nothing, because solids couldn't do without it. But the mistake in the beginning was to think of solids and space as two different things, instead of as two aspects of the same thing. The point is that they are different but inseparable, like the front end and the rear end of a cat. Cut them apart, and the cat dies.
If the gentleman is not serious, he will not be respected, and his learning will not be on a firm foundation. He considers loyalty and faithfulness to be fundamental, has no friends who are not like him, and when he has made mistakes, he is not afraid of correcting them.