没有妥善照顾的孩子，会让将来的社会得到报应，因为他可能会成为未来社会中消极的个体并构成文明社会的障碍。
The chief beauty about time is that you cannot waste it in advance. The next year, the next day, the next hour are lying ready for you, as perfect, as unspoiled, as if you had never wasted or misapplied a single moment in all your life. You can turn over a new leaf every hour if you choose.
在数学中，提出问题的艺术必须比解决问题更有价值。
艺术应该打扰舒适的人，安慰被困扰的人。
唯一的旅程是内心的旅程。
——1998年3月4日接受外界采访
