No science ever defends its first principles.

Courage is the first virtue that makes all other virtues possible.

The energy of the mind is the essence of life.

How many a dispute could have been deflated into a single paragraph if the disputants had dared to define their terms

Of the modes of persuasion furnished by the spoken word there are three kinds. The first kind depends on the personal character ofthe speaker; the second on putting the audience into a certain frame of mind; the third on the proof, provided by the words of the speech itself.

Men are marked from the moment of birth to rule or be ruled.

Speech is the representation of the mind, and writing is the representation of speech.