Jonas Salk Quotes
It is courage based on confidence, not daring, and it is confidence based on experience.
Citations
Smith, Jane S. Patenting the Sun: Polio and the Salk Vaccine. William Morrow, 1990, p. 222.
Related Quotes
Jonas Edward Salk was an American virologist and medical researcher who developed one of the first successful polio vaccines. He was born in New York City and attended the City College of New York and New York University School of Medicine.