Is God willing to prevent evil, but not able? Then he is not omnipotent. Is he able, but not willing? Then he is malevolent. Is he both able and willing? Then whence cometh evil? Is he neither able nor willing? Then why call him God?
The knowledge of sin is the beginning of salvation.
All friendship is desirable in itself, though it starts from the need of help
The misfortune of the wise is better than the prosperity of the fool.
He who needs riches least, enjoys riches most.
Neither one should hesitate about dedicating oneself to philosophy when young, nor should get tired of doing it when one's old, because no one is ever too young or too old to reach one's soul's healthy.