To win Wimbledon is a dream. To win it eight times is something I can’t even describe.

Every tree we plant today is an investment in tomorrow's clean air, stable climate, and thriving ecosystems.

Education is the foundation for empowering the next generation of scientists.

Faith is the light that guides me through the darkness.

The end of history will be a very sad time. The struggle for recognition, the willingness to risk one's life for a purely abstract goal, the worldwide ideological struggle that called forth daring, courage, imagination, and idealism, will be replaced by economic calculation, the endless solving of technical problems, environmental concerns, and the satisfaction of sophisticated consumer demands.