不要哭泣；不要愤怒。去理解。
Do not weep; do not wax indignant. Understand.
【译文】 孔子说：“我十五岁立志于学习，三十岁有所建树，四十岁不困惑，五十理解自然规律，六十明辨是非，七十随心所欲，不违规。”
当人们拥有某物时，往往会给予更高的评价。
Science fiction is the most important literature in the history of the world, because it's the history of ideas, the history of our civilization birthing itself.
The most profound ideas in mathematics often arise from the simplest observations.