ALCHEMY

Bacon, Francis
Alchemy may be compared to the man who told his sons of gold buried somewhere in his vineyard, where they by digging found no gold, but by turning up the mould about the roots of their vines, procured a plentiful vintage. So the search and endeavors to make gold have brought many useful inventions and instructive experiments to light.

Temple, Sir William
I have always looked upon alchemy in natural philosophy, to be like over enthusiasm in divinity, and to have troubled the world much to the same purpose.