To solve a mathematical problem is to uncover a piece of the universal puzzle.

Small changes in material design can lead to massive reductions in environmental impact.

Most of what matters in our lives takes place in our absence.

The secret of change is to focus all of your energy not on fighting the old, but on building the new.

The world is full of people whose notion of a satisfactory future is, in fact, a return to the idealised past.

Life has become richer by the love that has been lost。