How can I possibly put a new idea into your heads, if I do not first remove your delusions?

One can judge from experiment, or one can blindly accept authority. To the scientific mind, experimental proof is all important and theory is merely a convenie…

There has grown up in the minds of certain groups in this country the notion that because a man or corporation has made a profit out of the public for a number…

You have attributed conditions to villainy that simply result from stupidity.

Reason, or the ratio of all we have already known, is not the same that it shall be when we know more.

You're only as young as the last time you changed your mind.

An unbending and absolute acceptance of any idea is a sure sign of a small mind, no matter the greatness of intellect possesed by the one accepting that idea.