"El pasado es un país extranjero; allí hacen las cosas de otra manera."

To be brave is to love someone unconditionally, without expecting anything in return.

《在广州全国学生评议会的演说》（1923年8月15日）

Technology is just a tool. It's the creativity and imagination of the people using it that makes the difference.

心理现象是大自然的生存实验。