" For at 60, more than at 50, comes the realization of the transient nature of all earthly glories and successes, and the ephemeral quality of sensory joys and pleasures, when compared to intellectual, moral, or spiritual satisfactions…I have wondered how much of what I am is nature and how much was nurture? "

― , Lee Kuan Yew: The Grand Master's Insights on China, the United States, and the World