Physics is an attempt conceptually to grasp reality as something that is considered to be independent of its being observed. In this sense one speaks of physical reality.

I believe that we don't need to worry about what happens after this life, as long as we do our duty here-to love and to serve.

Out of the clutter find Simplicity

It's not that I'm so smart, it's just that I stay with problems longer.

Don't do anything that goes against your conscience, even if your country says so.

I myself should also be dead already, but I am still here.

You do not really understand something unless you can explain it to your grandmother.