Mathematics is not about numbers, equations, computations, or algorithms: it is about understanding.
數(shù)學(xué)不是關(guān)于數(shù)字、方程、計(jì)算或算法的：它是關(guān)于理解的。
要么忙著活，要么忙著死。
Every seed planted is a promise to the future.
Positivity transforms us for the better. By opening our hearts and minds, positive emotions allow us to discover and build new skills, new ties, new knowledge, and new ways of being.