Before entering any occupation, diligent preparation is to be undertaken. On Duties

Keeping up appearances, living in borrowed finery, wearing masks, the drapery of convention, play-acting for the benefit of others and oneself ... the constant fluttering of human beings around the one flame of vanity is so much the rule and the law that there is virtually nothing which defies understanding so much as the fact that an honest and pure drive towards truth should ever have emerged in them. They are deeply immersed in illusions and dream-images; their eyes merely glide across the surface of things and see 'forms'; nowhere does their perception lead to truth. The Gay Science

It is a common experience that a problem difficult at night is resolved in the morning after the committee of sleep has worked on it. Sweet Thursday

For neither good nor evil can last for ever; and so it follows that as evil has lasted a long time, good must now be close at hand. Don Quixote