There is a power under your control that is greater than poverty, greater than the lack of education, greater than all your fears and superstitions combined. It is the power to take possession of your own mind and direct it to whatever ends you may desire.
Andrew CarnegieEvery man gravitates to where he belongs in life, just as surely as water seeks and finds its level. His position is measured precisely by the quality and quantity of the service he renders, plus the mental attitude with which he relates himself to other people.
Andrew Carnegie