The question is, are we happy to suppose that our grandchildren may never be able to see an elephant except in a picture book?
问题是,我们是否乐于假设我们的孙子孙女可能永远无法在大象的图片书之外看到大象?
Life is 10% what happens to you and 90% how you react to it.
Mathematics is not about numbers, equations, computations, or algorithms: it is about understanding.