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.

The best scientific discoveries often happen at the boundaries between disciplines.

I think that the most important thing in life is to be true to yourself.

我能做的最起码是为那些不能发声的生命发声。