From a letter written to Nanjunda Rao, dated 26 August 1896 [source]

I will give you one advice however. All combined efforts in India sink under the weight of one iniquity — we have not yet developed strict business principles. Business is business, in the highest sense, and no friendship — or as the Hindu proverb says “eye-shame” — should be there. One should keep the clearest account of everything in one’s charge — and never, never apply the funds intended for one thing to any other use whatsoever — even if one starves the next moment. This is business integrity. Next, energy unfailing. Whatever you do let that be your worship for the time. Let this paper be your God for the time, and you will succeed.

# Swami Vivekananda