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數學直覺常常指導算法的發展，但確保其正確性和效率的是嚴格的證明。

Time present and time past are both perhaps present in time future, and time future contained in time past.

The essence of mathematics lies in its freedom.

作家必須甘于脆弱。

Success in the quarrying industry is not just about extracting stone; it's about understanding the land and respecting its limits.

供應鏈上的協作是提高效率和減少浪費的關鍵。