Anyone can repeat a technical explanation they read in a text-book or blog post.

He who can no longer pause to wonder and stand rapt in awe, is as good as dead; his eyes are closed.

For the moral attitudes of a people that is supported by religion need always aim at preserving and promoting the sanity and vitality of the community and its individuals, since otherwise this community is bound to perish. A people that were to honour falsehood, defamation, fraud, and murder would be unable, indeed, to subsist for very long.

The important thing is to never stop questioning. Never lose a holy curiosity.

My opinion about Miller's experiments is the following. ... Should the positive result be confirmed, then the special theory of relativity and with it the general theory of relativity, in its current form, would be invalid. Experimentum summus judex. Only the equivalence of inertia and gravitation would remain, however, they would have to lead to a significantly different theory.

Logic can take you from point A to point B. Imagination can take you wherever you want

A man's value to the community primarily depends on how far his feelings, thoughts, and actions are directed towards promoting the good of his fellows.