Do not think it worthwhile to produce belief by concealing evidence, for the evidence is sure to come to light.

Mathematics is not just about numbers, equations, computations, or algorithms: it is about understanding.

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.

From the deepest desires often come the deadliest hate.

文学是一种抵抗，是对不公正和压迫的斗争。

"The only thing that is infinite is the universe and human stupidity."

"The colony is the place where the project of a new humanity is to be tested, where the dream of a world without borders is to be realized, where the dream of a world without races is to be realized, where the dream of a world without nations is to be realized, where the dream of a world without classes is to be realized, where the dream of a world without genders is to be realized, where the dream of a world without religions is to be realized, where the dream of a world without money is to be realized, where the dream of a world without property is to be realized, where the dream of a world without war is to be realized."

Psychological understanding comes from seeing function in action.