It is those who concentrates on but one thing at a time who advance in this world. The great man or woman is the one who never steps outside his or her specialty or foolishly dissipates his or her individuality. – Og Mandino
The person who knows one thing and does it better than anyone else, even if it only be the art of raising lentils, receives the crown he merits. If he raises all his energy to that end, he is a benefactor of mankind and its rewarded as such. – Og Mandino
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