“The wise man will live as long as he ought, not as long as he can.”
                                
                                
                                
                                
                                    
                                    Sapiens vivit quantum debet, non quantum potest.
                                
                            
Source: Epistulae Morales ad Lucilium (Moral Letters to Lucilius), Letter LXX: On the proper time to slip the cable, Line 4.