"I am sorry to say that there..." - Quote by John F Kennedy

“I want every American to be free to stand up for his rights, even if sometimes he has to sit down for them.”

“Freedom is indivisible, and when one man is enslaved, all are not free.”

“I would encourage every American to walk as often as possible. It's more than healthy; it's fun.”

“Don't try to be perfect; just be an excellent example of being human.”

“The cat has complete emotional honesty - an attribute not often found in humans.”

“The human body is the most complex system ever created. The more we learn about it, the more appreciation we have about what a rich system it is.”

“The credit of advancing science has always been due to individuals and never to the age.”

“Epistemology without contact with science becomes an empty scheme. Science without epistemology is-insofar as it is thinkable at all-primitive and muddled.”

“As soon as any one belongs to a narrow creed in science, every unprejudiced and true perception is gone.”