The whole of nature, as has been said, is a conjugation of the verb to eat, in the active and in the passive.

Deliberate cruelty to our defenceless and beautiful little cousins is surely one of the meanest and most detestable vices of which a human being can be guilty.

The greatest obstacle to progress is not man's inherited pugnacity, but his incorrigible tendency to parasitism.

"This is old, therefore it is good"; the other says, "This is new, therefore it is better."

Consciousness is a phase of mental life which arises in connection with the formation of new habits. When habit is formed, consciousness only interferes to spoil our performance.

No healthy civilization can ever be reared on a foundation of devitalized work.

There are no rewards or punishments - only consequences.