Learning without thought is labor lost; thought without learning is perilous.

To be fond of learning is to be near to knowledge. To practice with vigor is to be near to magnanimity. To possess the feeling of shame is to be near to energy.

The doer alone learneth.

In old days, men studied for the sake of self-improvement; nowadays men study in order to impress other people.

Study the past if you would define the future.

Just as food eaten without appetite is a tedious nourishment, so does study without zeal damage the memory by not assimilating what it absorbs.