Quote by Amedeo Avogadro

"The smallest particles of matter may be supposing all matter to be made up of atoms."

"In chemistry, we must learn to think in terms of atoms and molecules."

"The law of combining volumes holds the key to understanding chemical reactions."

"Knowledge of the atomic structure is fundamental to all natural philosophy."

"Perseverance is the key to success."

"Don't give up on what you believe in."

"I've been through worse."

"You learn to live with the pain."