People change and forgot to tell each other.

译文：亲近贤臣，疏远小人，这是西汉兴盛的原因;亲近小人，疏远贤臣，这是东汉衰败的原因。

Chemistry is the science of connections, both literal and metaphorical.

The only meaningful way to study learning is through objective measurement.

The work of art is already within the block of marble. I just have to chisel away the superfluous material.

"El pasado es un país extranjero; allí hacen las cosas de otra manera."