The only meaningful way to study learning is through objective measurement.
"La memoria es el único paraíso del que no podemos ser expulsados."
如果你对每隻向你吠的狗,都停下来扔石头,你永远到不了目的地。
The most important quality for a scientist is curiosity - the desire to understand how things work.
"The changes we dread most may contain our salvation."