It’s fun to learn about stuff, and there are books on any subject imaginable.

Sigh, so true.

You do not need to leave your room. Remain sitting at your table and listen. Do not even listen, simply wait. Do not even wait, be quiet still and solitary. The world will freely offer itself to you to be unmasked, it has no choice, it will roll in ecstasy at your feet. – Franz Kafka

Keep them! Don’t ever throw them away! Someone will find them very interesting some day.