Les différentes sortes de folies sont innombrables.

Le titre de ce billet est d'Avicenne, Ibn Sīnā (fils de Sina), né le 7 août 980 et mort en juin 1037. "Marche avec des sandales jusqu'à ce que la sagesse te procure des souliers." (Avicenne).

Quelques autres citations d'Avicenne:

"Medicine considers the human body as to the means by which it is cured and by which it is driven away from health."

"That whose existence is necessary must necessarily be one essence."

"Width of life is more important than length of life."

"The knowledge of anything, since all things have causes, is not acquired or complete unless it is known by its causes."

"As to the mental essence, we find it in infants devoid of every mental form."

"Those who deny the first principle should be flogged or burned until they admit that it is not the same thing to be burned and not burned, or whipped and not whipped."

"God, the supreme being, is neither circumscribed by space, nor touched by time; he cannot be found in a particular direction, and his essence cannot change."

"Le temps fait oublier les douleurs, éteint les vengeances, apaise la colère et étouffe la haine; alors le passé est comme s'il n'eût jamais existé."

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