在数学中，提出问题的艺术必须比解决问题更有价值。
If you can’t change it, change your mindset.
Do not retreat in the face of difficulties, do not shirk responsibility.
The future belongs to those who believe in the beauty of their dreams.
I don't complain, I don't justify myself, I accept what comes and keep working.
我不是现实，我是幻想。