Fanaticism consists in redoubling your effort when you have forgotten your aim.
Those who cannot remember the past are condemned to repeat it.
Progress, far from consisting in change, depends on retentiveness. When experience is not retained, as among savages, infancy is perpetual. Those who cannot remember the past are condemned to repeat it.
To delight in war is a merit in the soldier, a dangerous quality in the captain, and a positive crime in the statesman.
Scepticism is the chastity of the intellect, and it is shameful to surrender it too soon or to the first comer: there is nobility in preserving it coolly and proudly through long youth, until at last, in the ripeness of instinct and discretion, it can safely be exchanged for fidelity and happiness.