While in the U.S.A., Swami Vivekananda delivered a series of lectures on spiritual knowledge. A rich doctor was greatly impressed. He requested Vivekananda to transfer some of his knowledge to him instantly for which he was ready to give any amount of money. Vivekanand said he did not need money but the doctor should give instant medical knowledge, in return!

The doctor replied: 'It will take years to impart medical knowledge'.

Vivekanand said: 'In the same way it will take several years to acquire spiritual knowledge.'

It takes years of study and plently of hard work to acquire knowledge.