The searching-out and thorough investigation of truth ought to be the primary study of man.
Time destroys the speculation of men, but it confirms nature.
Nothing troubles you for which you do not yearn.
Long life is denied us; therefore let us do something to show that we have lived.
What is thine is mine, and all mine is thine.
Study carefully, the character of the one you recommend, lest their misconduct bring you shame.