We know that once we stop learning and call ourselves learned, we become useless members of the scientific society.

The war broke out, and for a number of years I lived in darkness, with the memory of the lakes, the trees and the skies of Sweden, until I returned in 1946 to spend two unforgettable years in the laboratory of Hugo Theorell.

Due to these various circumstances, when I entered the Catholic University of Louvain in 1934, I had already travelled in a number of European countries and spoke four languages fairly fluently. This turned out to be a valuable asset in my subsequent career as a scientist.

Although attracted by the humanities, I had chosen medicine as a career, seduced by the image of the 'man in white' dispensing care and solace to the suffering. But science was lurking around the corner, in the form of an unpaid student assistantship in the laboratory of physiology.

The climate in the '50s and '60s for black performers or black people in the entertainment business was atrocious. It was atrocious.

Here on Earth, we've found organisms that thrive in environmental conditions we would have once thought uninhabitable. The presence of these extremophiles suggests that life could potentially take hold on worlds other than our own.

Head Start's ability to improve the educational skills and opportunities of Latino children will be an important component of America's future success.

When studios start telling me why a particular film project won't work, I remember 'Rocky.' I remember that the biggest success Bob Chartoff and I have had was a film nobody wanted to make.