挑战
The real challenge is not in solving the equations, but in understanding what the solutions mean.
Complexity is not a barrier to understanding, but a challenge to be overcome.
The real challenge is not just building climate models, but interpreting what they tell us.
The only way to be free is to constantly challenge authority and convention.
A writer must be willing to be challenged.
The best stories are those that challenge the status quo.
The writer’s challenge is to find the universal in the particular.
The best books are those that challenge you.
The best stories are those that challenge our assumptions.
"The greatest challenge is to paint what cannot be painted."
The challenge is to express the most with the least.
"The human figure is the most challenging and rewarding subject for an artist."
