The knowledge of the circumstances of which we must make use never exists in concentrated or integrated form, but solely as the dispersed bits of incomplete and frequently contradictory knowledge which all the separate individuals possess.

The world owes all its onward impulses to men ill at ease; the happy man inevitably confines himself within ancient limits.

分解大数对于经典计算机来说是困难的，但量子计算机可以高效地完成。