Any real change implies the breakup of the world as one has always known it, the loss of all that gave one an identity, the end of safety.
Each child is an adventure into a better life - an opportunity to change the old pattern and make it new.
We must turn the greatest collective challenge facing humankind today – climate change – into the greatest opportunity for common progress towards a sustainable future.
I think the tiniest little thing can change the course of your day, which can change the course of your year, which can change who you are.
We keep moving forward, opening new doors, and doing new things, because we're curious and curiosity keeps leading us down new paths.
In the world we live in everything militates in favor of things that have not yet happened, of things that will never happen again.
I believe that at the end of the century the use of words and general educated opinion will have altered so much that one will be able to speak of machines thinking without expecting to be contradicted.
All progress is precarious, and the solution of one problem brings us face to face with another problem.