Experience without theory is blind, but theory without experience is mere intellectual play. – Immanuel Kant
Immaturity is the incapacity to use ones intelligence without the guidance of another. – Immanuel Kant

Experience without theory is blind, but theory without experience is mere intellectual play. – Immanuel Kant
Immaturity is the incapacity to use ones intelligence without the guidance of another. – Immanuel Kant
Suicide is not abominable because God prohibits it; God prohibits it because it is abominable. – Immanuel Kant
But although all our knowledge begins with experience, it does not follow that it arises from experience. – Immanuel Kant