“If you did not suffer from emotions, from feelings, you could be as powerful as we are.”

CBC Ideas Interview (podcast) (September 25, 2006)

Source: Rise of the Evening Star

Psychomagic: The Transformative Power of Shamanic Psychotherapy (2010)
Context: At a certain age, you have to make yourself useful for others. When you have lived and life has given you an experience, whether good or bad, the moment arrives when you should pass on what you know. Rather than turn into a dumb old person, you should go further every time. Aging does not exist, neither does mental decline. The memory can have less capacity to find a word or maybe you can feel less sexual desire, less virulence, but there is no reason for desire to have disappeared. If, during your life you have worked the emotions, when you mature you begin to know sublime feelings, which you did not have when you were young because nature did not let you. It takes forty years to find yourself. The true opening of the consciousness cannot be had before this age. From there, the journey begins.

Source: Rise of the Evening Star

Source: The Ultimate Hitchhiker's Guide to the Galaxy

Preface.
Source: Lyrical Ballads (1798–1800)

Si pudieras salir de tus penas y salieras de tus penas, ¿sabrías adonde ir fuera de tus penas?
Voces (1943)

Du kannst Dich zurückhalten von den Leiden der Welt, das ist Dir freigestellt und entspricht Deiner Natur, aber vielleicht ist gerade dieses Zurückhalten das einzige Leid, das Du vermeiden könntest.
104
The Zürau Aphorisms (1917 - 1918)