Most people assume that creativity is a fixed trait — you either have it or you don't. But research suggests that creativity is less like a gift and more like a muscle: it can be developed, strengthened, and yes, sometimes exhausted.
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Somehow the despondency thus treated becomes pregnant with an access to new vitality. The organism needs to lie dormant whilst its latent energies are gathering strength for activity on a fresh plane. It is important, moreover, to observe that, so long as there is growth, the fresh plane is likewise a higher plane.
Robert Ranulph Marett
The obscure we see eventually, the completely apparent takes longer.
Edward R. Murrow — attributed remark, collected in Murrow: His Life and Times
The multitude of men agree in this: that they equate thinking with reading, and spare themselves the trouble of thinking, because they are able to read. They thus very much resemble those who to escape from want have sold their heritage, and now hope to live by their wages from those who have acquired it.
Arthur Schopenhauer — Parerga and Paralipomena