Living things have no inertia, and tend to no equilibrium.
My experience of the world is that things left to themselves don't get right.
History warns us that it is the customary fate of new truths to begin as heresies and to end as superstitions.
Science is nothing, but trained and organized common sense.
The quarrels of theologians and philosophers have not been about religion, but about philosophy; and philosophers not unfrequently seem to entertain the same feeling toward theologians that sportsmen cherish toward poachers.
'Infidel' is a term of reproach, which Christians and Mohammedans, in their modesty, agree to apply to those who differ from them.