affirm , approve , attest , authenticate
Not one specific person said it. It is known as a proverb. A proverb is something that is said that holds some truth to life and is passed down from generation to generation in a community. Here is a link to a really great quote site I found that has a search engine for quotes only and the other is a little more information on a proverb.
what is the antonym for exceptional
An antonym for pressure would be ease or relaxation. Antonym means the opposite of a word.
Generally in food and beverage circles a " dumb waiter " is found in restaurants, It is the waiter/ess work station. Usually looks like a side board, there he/she will have extra knives, forks, napkins, glasses etc...a place to work from.