A chair should first embrace the body, then inspire the mind.
椅子首先要拥抱身体，然后激发心灵。
I write to make the invisible visible.
Don't have good ideas if you aren't willing to be responsible for them.
Those who are willing to give up freedom for security will eventually lose both.
Do just once what others say you can't do, and you will never pay attention to their limitations again.
The whole art of teaching is only the art of awakening the natural curiosity of young minds for the purpose of satisfying it afterwards.