It is the soul itself which sees and hears, and not those parts which are, as it were, but windows to the soul.

Not to know what happened before you were born is to be a child forever. For what is the time of a man, except it be interwoven with that memory of ancient things of a superior age?

The hours pass and the days and the months and the years, and the past time never returns.

Reason should direct, and appetite obey.

Prudence in action avails more than wisdom in conception.

The searching-out and thorough investigation of truth ought to be the primary study of man.

Rashness attends youth, as prudence does old age.