Boundaries define us. They define what is me and what is not me. A boundary shows me where I end and someone else begins, leading me to a sense of ownership.
The world is dark, and light is precious.
我正在进步。我不完美，但我每天都在努力。
The beauty of mathematics is that it is one of the few areas of human endeavor where absolute truth can be known.
Psychology must be grounded in biology to be truly scientific.