Climate change is probably the greatest long-term challenge facing the human race.
The human race is challenged more than ever before to demonstrate our mastery, not over nature but of ourselves.
Making films has got to be one of the hardest endeavors known to humankind.
Humanity is facing a challenge unlike any we've ever had to confront. We are in an unprecedented period of change.
If scientific discovery has not been an unalloyed blessing, if it has conferred on mankind the power not only to create but also to annihilate, it has at the same time provided humanity with a supreme challenge and a supreme testing
I didn't go out looking for negative characters; I went out looking for people who have a struggle and a fight to tackle. That's what interests me.
In life, loss is inevitable. Everyone knows this, yet in the core of most people it remains deeply denied - 'This should not happen to me.' It is for this reason that loss is the most difficult challenge one has to face as a human being.
Everyone faces the challenge of finding meaning to their suffering.
Hour-long TV is no joke. It tests you as a human being. It makes you a stronger person, but it's really crazy.
I don't look at computers as opponents. For me it is much more interesting to beat humans.
If the human intellect functions, it is actually in order to solve the problems which the man's inner destiny sets it.
