Do what is right, though the world may perish.

Reason must approach nature in order to be taught by it. It must not, however, do so in the character of a pupil who listens to everything that the teacher chooses to say, but of an appointed judge who compels the witness to answer questions which he has himself formulated.

If a man is often the subject of conversation he soon becomes the subject of criticism.

Thrift is care and scruple in the spending of one's means. It is not a virtue and it requires neither skill nor talent.

Give a man everything he wants and at that moment everything is not everything

The arts of speech are rhetoric and poetry. Rhetoric is the art of transacting a serious business of the understanding as if it were a free play of the imagination; poetry that of conducting a free play of the imagination as if it were a serious business of the understanding.

Everything in nature acts in conformity with law.