Si os la mostrara — replicó don Quijote — , ¿qué hiciérades vosotros en confesar una verdad tan notoria? La importancia está en que sin verla lo habé… - Miguel de Cervantes

What a man has, so much he is sure of.

Experience, the universal Mother of Sciences.

Remember everything and do not miss a detail of how she receives you: if her color changes as you give her my message; if she becomes agitated or troubled when she hears my name; if she moves about on her pillows, if you happen to find her in the richly furnished antechamber of her rank; if she is standing, look at her to see if she shifts from one foot to another; if she repeats her answer two or three times; if she changes from gentle to severe, from harsh to loving; if she raises her hand to her hair to smooth it, although it is not disarranged; finally, my friend, observe all her actions and movements, because if you relate them to me just as they occurred, I shall interpret what she keeps hidden in the secret places of her heart in response to the fact of my love; for you must know, Sancho, if you do not know it already, that with lovers, the external actions and movements, revealed only when the topic of their love arises, are reliable messengers bringing the news of what transpires deep within their souls.