(or you won't find it) a creativity tool based on the ancient wisdom of Heraclitus by Roger von Oech, author of A Whack on the Side of the Head.

Heraclitus was an ancient Greek philosopher that was famous for his brilliant and provocative sayings.

The creative insights of Heraclitus:
1 The cosmos speaks in patterns
2 Expect the unexpected, or you wont find it
3 Everything flows
4 You cant step in the same river twice
5 That which opposes produces a benefit
6 A wonderful harmony is created when we join together the seemingly unconnected
7 If all things turned to smoke, the nose would become the discerning organ
8 The Sun will not exceed its limits, because the avenging Furies, ministers of Justice, would find out
9 Lovers of wisdom must open their minds to very many things
10 I searched into myself
11 Knowing many things doesn't teach insight
12 Many fail to grasp whats right in the palm of their hands
13 When there's no sun, we can see the evening stars
14 The most beautiful order is a heap of sweepings piled up at random
15 Things love to conceal their true nature
16 Those who approach life like a child playing a game, moving and pushing pieces, possess the power of kings
17 Sea water is both pure and polluted: for fish it is drinkable and life-giving: for humans undrinkable and destructive
18 On a circle, an end point can also be a beginning point
19 It is disease that makes health pleasant, hunger that makes fullness good, and weariness that makes rest sweet.
20 Dogs bark at what they don't understand
21 The doctor inflicts pain to cure suffering
22 The way up and the way down are one and the same
23 All things rest by changing
24 The barley-wine drink falls apart unless it is stirred
25 While we're awake, we share one universe, but in sleep we are each turn away to a world of our own
26 Donkeys prefer garbage to gold
27 Every walking animal is driven to its purpose with a whack
28 There is a greater need to extinguish arrogance than a blazing fire
29 Your character is your destiny
30 The sun is new each day