The knowledge of one generation is the ignorance of the next.

Do we exert our own liberties without injury to others - we exert them justly; do we exert them at the expense of others - unjustly. And, in thus doing, we step from the sure platform of liberty upon the uncertain threshold of tyranny.

The best road to correct reasoning is by physical science; the way to trace effects to causes is through physical science; the only corrective, therefore, of superstition is physical science.

The existing principle of selfish interest and competition has been carried to its extreme point; and, in its progress, has isolated the heart of man, blunted the edge of his finest sensibilities, and annihilated all his most generous impulses and sympathies.

... the happiness of a people is the only rational object of government, and the only object for which a people, free to choose, can have a government at all.

Trust me, there are as many ways of living as there are men, and one is no more fit to lead another, than a bird to lead a fish, or a fish a quadruped.

Pets, like their owners, tend to expand a little over the Christmas period.