The use of a program to prove the 4-color theorem will not change mathematics - it merely demonstrates that the theorem, a challenge for a century, is probably not important to mathematics.
怀疑并不是令人愉快的状态,但确信是荒谬的。
La literatura es el arte de la palabra, y la palabra es el arte de la literatura.
爱是统一和凝聚的原则,争斗是分离和崩解的力量。