Boasting, like gilded armour, is very different inside from outside.
Of what use is a philosopher who doesn't hurt anybody's feelings?
You will become a teacher of yourself when for the same things that you blame others, you also blame yourself.
To become self-educated you should condemn yourself for all those things that you would criticize others.
It takes a wise man to discover a wise man.
One original thought is worth a thousand mindless quotings