If an elderly respected expert in a given field tells you that something can be done he is almost certainly right. If an elderly respected expert in a given field tells you that something is impossible, he is almost certainly wrong.
Robert A. HeinleinA dying culture invariably exhibits personal rudeness. Bad manners. Lack of consideration for others in minor matters. A loss of politeness, of gentle manners, is more significant than is a riot.
Robert A. HeinleinAbility is a wonderful thing, but its value is greatly enhanced by dependability. Ability implies repeatability and accountability.
Robert A. Heinlein