mankind is not a tribe of animals to which we owe Compassion. Mankind is club to which we owe our Subscription.

Anyone who believes that anything can be suited to everyone is a great fool, because medicine is practiced not on mankind in general, but on every individual in particular. 

The administrator who is good for anything ought not to beg his subjects to be ruled by him; although the present governors of mankind are of a different stamp; they may be justly compared to the mutinous sailors...

Work is the grand cure of all the maladies and miseries that ever heset mankind.