No one can be perfectly happy till all are happy.

There is no origin for the idea of an afterlife, save the conclusion which the savage draws from the notion suggested by dreams.

To play billiards well is the sign of a misspent youth.

We must infer that a plant or animal of any species, is made up of special units, in all of which there dwells the intrinsic aptitude to aggregate into the form of that species: just as in the atoms of a salt, there dwells the intrinsic aptitude to crystallize in a particular way.‎

So far from science being irreligious, as many think, it is the neglect of science that is irreligious-it is the refusal to study the surrounding creation that is irreligious.

So long as selfishness makes government needful at all, it must make every government corrupt, save one in which all men are represented.

Our lives are universally shortened by our ignorance.