Laughter is an affect resulting from the sudden transformation of a heightened expectation into nothing. - Immanuel Kant

La incapacidad significa la imposibilidad de servirse de la propia inteligencia sin la guía de otro. Esta incapacidad es culpable porque su causa no reside en la falta de inteligencia sino de decisión y valor para servirse por sí mismo de ella sin la tutela de otro. ¡Sapere aude! ¡Ten el valor de servirte de tu propia tazón!: he aquí el lema de la Ilustración.

This problem is the most difficult and the last to be solved by mankind.

[W]hat alone has value is the use to which life is put and the end to which it is directed. The value of life has to be created by man, it cannot be obtained through luck but only through wisdom. He who is anxiously concerned over losing his life will never enjoy life.