The psychologist must avoid all metaphysical assumptions.
心理学家必须避免一切形而上的假设。
I think it's important to take risks in life and in your career.
Every time I write a book, every time I face that blank page, I’m convinced that I can’t do it.
数学的本质在于它的自由。
知行合一不仅是一个理论问题，也是一个实践问题。