Generally speaking, envy, resentment, and self-pity are disastrous modes of thoughts.Self-pity gets fairly close to paranoia, and paranoia is one of the very hardest things to reverse.
商业的成功源于理解人,而不仅仅是产品。
数学的美在于它既精确又富有创造性。
恐惧是人类如此强大的情感,以至于当我们允许它控制我们时,它会驱赶我们心中的同情。