Jonas Salk

"What to do if you are caught in traffic?"

"You are a gift to your parents, to your teachers, to your society."

"The ultimate measure of a person is not where they stand in moments of comfort and convenience, but where they stand at times of challenge and controversy."

"Today's truth may be tomorrow's fiction."

"The most rewarding part of my life has been my family."

"I don't think you can separate knowledge from humanity."

"No one can predict the future."

"I have a simple philosophy: Fill what's empty. Empty what's full. Scratch where it itches."

"The obligation is clear: it is to act."

"I have been fortunate in my professional life."

"Behind every cloud is another cloud."

"The preservation of health is far easier than the restoration of health."

"Dare to dream."

"Human beings can be compassionate."

"I spent my life working on a vaccine, not a medal."

"We are the products of our choices."

"The world is full of magic if you know how to look for it."

"I believe in the dignity of human beings."

"Science must be for everybody."

"The greatest threat to our survival is ourselves."

"Do not fear science and technology."

"I am grateful for my life."

"Your behavior is your destiny."

"The future belongs to those who believe in the beauty of their dreams."

"Tolerance and variability are the prerequisites of life."

"I would like to live to be 100 years old."

"Never think that you're not capable of greatness."

"The scientist belongs to his country in times of crisis; but at all times he must remain a scientist."

"My life has been one of great privilege and great joy."

"Our strength lies in our uniqueness."