“In the human society, whether one is a laborer, merchant, warrior, administrator, or farmer, or even if one belongs to the highest class and is a literary man, a scientist or a theologian, he has to work in order to maintain his existence. The Lord therefore tells Arjuna that he need not give up his occupation, but while he is engaged in his occupation he should remember Krishna.” (Shrila Prabhupada, Bhagavad-gita, Introduction)