The hardest challenges often lead to the greatest breakthroughs.
意识不是一种事物,而是一种适应性反应的动态流动。
学习应使人感到快乐,否则不能称之为真正的学习。
And no grown-ups will ever understand that this is a matter of so much importance!
Don’t wait for the storm to pass; dance in the rain.
A public-opinion poll is no substitute for thought.