A multitude of books distracts the mind.

Let not a single day pass without your learning a verse, half a verse, or a fourth of it, or even one letter of it; not without attending to charity, study and other pious activity.

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

I've often felt there might be more to be gained by studying business failures than business successes.

The main object of teaching is not to give explanations, but to knock at the doors of the mind.

Learning is the only thing the mind never exhausts, never fears, and never regrets.