Notion without intuition is empty, intuition without notion is blind.

The yellow Indians do have a meagre talent. The Negroes are far below them, and at the lowest point are a part of the American people.

It is through good education that all the good in the world arises.

There is no virtue in penance and fasting which waste the body; they are only fanatical and monkish.

If I am to constrain you by any law, it must be one by which I am also bound.

Two things fill the mind with ever-increasing wonder and awe, the more often and the more intensely the mind of thought is drawn to them: the starry heavens above me and the moral law within me... Morality is not properly the doctrine of how we may make ourselves happy, but how we may make ourselves worthy of happiness.

The history of the human race, viewed as a whole, may be regarded as the realization of a hidden plan of nature to bring about a political constitution, internally, and for this purpose, also externally perfect, as the only state in which all the capacities implanted by her in mankind can be fully developed.