It is the obvious which is so difficult to see most of the time. People say 'It's as plain as the nose on your face.' But how much of the nose on your face can you see, unless someone holds a mirror up to you?

To test a perfect theory with imperfect instruments did not impress the Greek philosophers as a valid way to gain knowledge.

Never let your sense of morals get in the way of doing what's right.

Individual science fiction stories may seem as trivial as ever to the blinder critics and philosophers of today - but the core of science fiction, its essence has become crucial to our salvation if we are to be saved at all.

There seems to be a lack of common sense perspective in some media people,

Common sense is not so common.