Both love of mankind, and respect for their rights are duties; the former however is only a conditional, the latter an unconditional, purely imperative duty, which he must be perfectly certain not to have transgressed who would give himself up to the secret emotions arising from benevolence.

No state at war with another state should engage in hostilities of such a kind as to render mutual confidence impossible when peace will have been made.

Riches ennoble a man's circumstances, but not himself.

Standing armies shall in time be totally abolished.

Two things fill the mind with ever new and increasing admiration and awe, the oftener and more steadily we reflect on them: the starry heavens above and the moral law within.

Nothing is divine but what is agreeable to reason.

Ingratitude is the essence of vileness.