One must console oneself with the thought that time has a sieve through which most of these important things run into the ocean of oblivion and what remains after this selection is often still trite and bad.

Peace cannot be kept by force. It can only be achieved by understanding. You cannot subjugate a nation forcibly unless you wipe out every man, woman, and child. Unless you wish to use such drastic measures, you must find a way of settling your disputes without resort to arms.

There is an atmosphere of well-sounding oratory that likes to attach itself to dress clothes. Away with it!

If you can't explain it simply, you don't understand it well enough.

What I seek to accomplish is simply to serve with my feeble capacity truth and justice, at the risk of pleasing no one.

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.

No idea is conceived in our mind independent of our five senses [i.e., no idea is divinely inspired].