Better a little which is well done, than a great deal imperfectly.
The life which is not examined is not worth living.
No one is a friend to his friend who does not love in return.
Take a look around, then, and see that none of the uninitiated are listening. Now by the uninitiated I mean the people who believe in nothing but what they can grasp in their hands, and who will not allow that action or generation or anything invisible can have real existence.
There is far greater peril in buying knowledge than in buying meat and drink.
Maximize the power of the beliefs that strengthen you and neutralize those that weaken you.