1 Remember to keep a clear head in difficult times. 2 There are two main human sins from which all the others derive: impatience and indolence. 3 The greatest souls are capable of the greatest vices as well as of the greatest virtues. 4 The Material Has to Be Created. 5 Every Failure Is a Step to Success. 6 Adversity is the first path to truth. 7 To Doubt Everything or to Believe Everything Are Two Equally Convenient Solutions; Both Dispense with the Necessity of Reflection. 8 The wound is at her heart. 9 If you make a mistake and do not correct it, this is called a mistake. 10 People, often deceived by an illusive good, desire their own ruin. 11 A Man Who Cannot Command Himself Will Always Be a Slave. 12 Force Without Wisdom Falls of Its Own Weight. 13 The worst enemy you can meet will always be yourself.