Bhagavan Ramakrishna used to tell a story of some men who went into a mango orchard and busied themselves in counting the leaves, the twigs, and the branches, examining their color, comparing their size and noting down everything most carefully, and then got up a learned discussion on each of these topics, which were undoubtedly highly interesting to them. But one of them, more sensible than the others, did not care for all these things, and instead thereof, began to eat the mango fruit. And was he not wise? So leave this counting of leaves and twigs and note-taking to others. This kind of work has its proper place, but not here in the spiritual domain. You never see a strong spiritual man among these ‘leaf-counters’.
Religion, the highest aim, the highest glory of man, does not require so much labour. If you want to be a Bhakta, it is not at all necessary for you to know whether Krishna was born in Mathura or in Vraja, what he was doing, or just the exact date on which he pronounced the teachings of the Gita. You only require to feel the craving for the beautiful lessons of duty and love in the Gita. All the other particulars about it and its author are for the enjoyment of the learned. Let them have what they desire. Say ‘Shantih, Shantih’ to their learned controversies, and let us ‘eat the mangoes.’
Source: The Complete Works of Swami Vivekananda/Volume 3/Bhakti-Yoga/Qualifications of the Aspirant and the Teacher