In an arch each single stone which, if severed from the rest, would be perhaps defenceless is sufficiently secured by the solidity and entireness of the whole fabric, of which it is a part.
Robert BoyleIf the juices of the body were more chymically examined, especially by a naturalist, that knows the ways of making fixed bodies volatile, and volatile fixed, and knows the power of the open air in promoting the former of those operations; it is not improbable, that both many things relating to the nature of the humours, and to the ways of sweetening, actuating, and otherwise altering them, may be detected, and the importance of such discoveries may be discerned.
Robert Boyle