"Be always displeased with what you are if you wish to be what you are not. Always add, always walk, always proceed. Neither stand still nor go back nor deviate."

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There is a legend that when God was equipping man for his long life journey of exploration, the attendant good angel was about to add the gift of contentment and complete satisfaction. The Creator stayed his hand and said, 'No, if you bestow that upon him you will rob him forever of all joy of self-discovery.'

— Orison Swett Marden