Sadism is all right in its place, but it should be directed to proper ends.

One is very crazy when in love.

Religious ideas have sprung from the same need as all the other achievements of culture: from the necessity for defending itself against the crushing supremacy of nature.

Love in the form of longing and deprivation lowers the self regard.

Only a rebuke that 'has something in it' will sting, will have the power to stir our feelings, not the other sort, as we know.

Just as no one can be forced into belief, so no one can be forced into unbelief.

One must not be mean with affections; what is spent of the funds is renewed in the spending itself. Left untouched for too long, they diminish imperceptibly or the lock gets rusty; they are there all right but one cannot make use of them.