Mathematics is not about numbers, equations, computations, or algorithms: it is about understanding.
Train people well enough so they can leave, treat them well enough so they don't want to.
家就是当你不得不去那里时，他们必须接纳你的地方。
The great question which, in all ages, has disturbed mankind, and brought on them the greatest part of their mischiefs, has been, not whether there be power in the world, nor whence it came, but who should have it.
The proper function of man is to live，not to exist.
"Theatre is the art of the unspoken."
What you actually pay for something is at least twice the listed price because of the energy， time， money needed to set it up， learn， maintain， repair， and dispose of at the end. Not all prices appear on labels. Actual costs are 2x listed prices.
