Joseph Conrad said this quote

And because you not always can keep your eyes shut there comes the real trouble--the heart pain--the world pain. I tell you, my friend, it is not good for you to find you cannot make your dream come true, for the reason that you not strong enough are, or not clever enough. . . . Ja! . . . And all the time you are such a fine fellow too! Wie? Was? Gott im Himmel! How can that be? Ha! ha! ha!’The shadow prowling amongst the graves of butterflies laughed boisterously.