"Great achievement is usually born of great sacrifice, and is never the result of selfishness." ― Napoleon Hill Topic(s): Great Tags: achievement, great, usually More From Napoleon Hill "We begin to see, therefore, the importance of selecting our environment with the greatest of care, because environment is the mental feeding ground out of which the food that goes into our minds is extracted." "Wise men, when in doubt whether to speak or to keep quiet, give themselves the benefit of the doubt, and remain silent." "You might well remember that nothing can bring you success but yourself." More In Great "It gives me great pleasure indeed to see the stubbornness of an incorrigible nonconformist warmly acclaimed."― Albert Einstein "The immortality of the soul is a matter which is of so great consequence to us and which touches us so profoundly that we must have lost all feeling to be indifferent about it."― Blaise Pascal "The conscious mind may be compared to a fountain playing in the sun and falling back into the great subterranean pool of subconscious from which it rises."― Sigmund Freud