Hermann von Helmholtz

The older view of the nature of heat was that it is a substance, very fine and imponderable indeed, but indestructible, and unchangeable in quantity, which is an essential fundamental property of all matter.

I then endeavoured to show that it is more especially in the thorough conformity with law which natural phenomena and natural products exhibit, and in the comparative ease with which laws can be stated, that this difference exists.

I must be informed, that one of my great duties was, to obey the priests in all things; and this I soon learnt, to my utter astonishment and horror, was to live in the practice of criminal intercourse with them.