1. “Our mind is capable of passing beyond the dividing line we have drawn for it. Beyond the pairs of opposites of which the world consists, other, new insights begin.” (Hermann Hesse)

2. “The world is all gates, all opportunities, strings of tension waiting to be struck.” (Ralph Waldo Emerson)

3. “Creativity arises out of the tension between spontaneity and limitations, the latter (like the river banks) forcing the spontaneity into the various forms which are essential to the work of art or poem.” (Rollo May)

4. “Almost every wise saying has an opposite one, no less wise, to balance it.” (George Santayana)

5. “Opposites are not contradictory but complementary.” (Niels Bohr)

Borrowed with Pride from all over the place.