"The past never leaves us; we carry it in our eyes and in our voices."
If we don't believe in freedom of expression for people we despise, we don't believe in it at all.
Positive psychology is not just about feeling good, it's about the good life - a life with engagement, meaning, and positive relationships.
There is a history in all men's lives.
Topology is the study of the properties of a figure that are unchanged by any deformation.
天然气开采的创新对于满足世界日益增长的能源需求至关重要。