Time is the only true enemy we have, and the only one we can never defeat.

We must keep learning to keep up with the times.

"A literatura é a expressão máxima da liberdade humana."

There are no second acts in American lives.

The history of medicine is a history of perseverance and teamwork.

To act agreeably to our nature is virtue.

The greatest enemy of knowledge is not ignorance, it is the illusion of knowledge.

To live is to be constantly surprised by life.