There are no mineral monsters.

Belief begins where science leaves off and ends where science begins.

Disease may be defined as 'A change produced in living things in consequence of which they are no longer in harmony with their environment.

Those who have dissected or inspected many [bodies] have at least learnt to doubt; while others who are ignorant of anatomy and do not take the trouble to attend it are in no doubt at all.

Silicon-based life may be impossible for one other reason: silicon bonds readily dissolve in water.

The outgroup is rocks.