Here is the prime condition of success: Concentrate your energy, thought and capital exclusively upon the business in which you are engaged. Having begun on one line, resolve to fight it out on that line, to lead in it, adopt every improvement, have the best machinery, and know the most about it.
Andrew CarnegieIt is trying to be other than one's self that unmans one. Be your own natural self and go ahead.
Andrew CarnegieA word, a look, an accent, may affect the destiny not only of individuals, but of nations. He is a bold man who calls anything a trifle.
Andrew Carnegie