“What is this?" I asked him. "Are you sad? Do you feel a longing for your own country, or are you simply planning new calculations? Is it mathematics or nostalgia?" "My friend..." he replied, "nostalgia and calculations are not unrelated.” NostalgiaCalculation Book:The Man Who Counted: A Collection of Mathematical Adventures Source: The Man Who Counted: A Collection of Mathematical Adventures
“If you do not know how to calculate exactly, your visions are worth nothing; if you arrive at them through calculation alone, I disbelieve them.” RealityMathematicsCalculation Book:The Man Who Counted: A Collection of Mathematical Adventures Source: The Man Who Counted: A Collection of Mathematical Adventures