Boastfulness

The empty vessel makes the greatest sound.
-William Shakespeare
 
The firecracker cries aloud,
"I am the light!"
and is finished in a moment.
The diamond, shining its light constantly,
never says a word about its light.
-Hazrat Inayat Khan
 
Tell me what you boast of
and I will tell you what you lack.
-Anonymous
 
There is this much benefit in brag,
that the speaker is unconsciously expressing his own ideal.
Humor him by all means;
draw it all out, and hold him to it.
-Ralph Waldo Emerson
 
When boasting ends,
there dignity begins.
-Edward Young