Conceit may puff a man up, but never prop him up

Conceit may puff a man up, but never prop him up. - John Ruskin,

There is hardly anything in the world that some man cannot make a little worse and sell a little cheaper, and the people who consider price only are this man's lawful prey.

When a man is wrapped up in himself he makes a pretty small package

I believe the first test of a truly great man is in his humility.

There's a big difference between confidence and conceit.