"If they can make penicillin out of mouldy bread, they can sure make something out of you"

This quote by Muhammad Ali is a powerful statement about the prospective and durability of human beings. By referencing the creation of penicillin from mouldy bread, Ali is highlighting the unbelievable ability of humans to turn something apparently ineffective or unfavorable into something valuable and life-saving. He then applies this idea to people, recommending that if something as basic as mouldy bread can be changed into a powerful medicine, then certainly a person with their distinct skills and abilities can also be transformed into something excellent. This quote acts as a tip to never undervalue oneself and to constantly pursue achievement, no matter the circumstances.