Only when Genius is married to Science can the highest results be produced.

The idea of disembodied spirits is wholly unsupported by evidence, and I cannot accept it.

To play billiards well was a sign of an ill-spent youth

Opinion is ultimately determined by the feelings, and not by the intellect.

A living thing is distinguished from a dead thing by the multiplicity of the changes at any moment taking place in it.

No one can be perfectly free till all are free; no one can be perfectly moral till all are moral; no one can be perfectly happy till all are happy.

Love is life's end, but never ending. Love is life's wealth, never spent, but ever spending. Love's life's reward, rewarded in rewarding.