| 1 | Socrates | The life which is unexamined is not worth living. |
| 2 | Albert Schweitzer | Affirmation of life is the spiritual act by which man ceases to live unreflectively and begins to devote himself to his life with reverence in order to raise it to its true value. To affirm life is to deepen, to make more inward, and to exalt the will to live. |
| 3 | Francis Bacon | If a man will begin with certainties, he shall end in doubts, but if he will be content to begin with doubts, he shall end in certainties. |
| 4 | Albert Einstein | The most beautiful thing we can experience is the mysterious. It is the source of all true art and science. He to whom this emotion is a stranger, who can no longer pause to wonder and stand rapt in awe, is as good as dead: his eyes are closed. |
| 5 | Dr. Niels Bohr | We all agree that your theory is mad. The problem which divides us is this: is it sufficiently crazy to be right? |
| 6 | Friedrich Nietzsche | Even a thought, even a possibility, can shatter and transform us. |
| 7 | Carl Jung | The meeting of two personalities is like the contact of two chemical substances; if there is any reaction, both are transformed. |
| 8 | Publilius Syrus | While we stop to think, we often miss our opportunity. |
| 9 | Paul Valery | The folly of mistaking a paradox for a discovery, a metaphor for proof, a torrent of verbiage for a spring of capital truths, and oneself for an oracle, is inborn in us. |
| 10 | Carl Jung | We should not pretend to understand the world only by the intellect; we apprehend it just as much by feeling. Therefore the judgement of the intellect is, at best, only the half of truth, and must, if it be honest, also come to an understanding of its inadequacies. |
| 11 | Rainer Maria Rilke | Love consists in this, that two solitudes protect and touch and greet each other. |
| 12 | Claude Bernard | Man can learn nothing unless he proceeds from the known to the unknown. |
| 13 | Albert Einstein | Physical concepts are free creations of the human mind, and are not, however it may seem, uniquely determined by the external world. |
| 14 | Sigmund Freud | The psychic development of the individual is a short repetition of the course of development of the race. |
| 15 | Jose Ortega y Gasset | Culture is not life in its entirety, but just the moment of security, strength and clarity. |
| 16 | J. Krishnamurti | One must also listen to all the impacts, if one can, of the outward influences and one’s reaction to them; and through the listening, seeing, there comes a learning. |
| 17 | Socrates | There is only one good, knowledge, and one evil, ignorance. |
| 18 | Leonardo da Vinci | If you wish to gain knowledge of the form of problems, begin with learning to see it many ways. |
| 19 | Pablo Picasso | I am always doing that which I can not do, in order that I may learn how to do it. |
| 20 | I Ching | When the way comes to an end, then change – having changed, you pass through. |
| 21 | Leonardo da Vinci | Iron rusts from disuse, stagnant water loses its purity, and in cold weather becomes frozen: even so does inaction sap the vigor of the mind. |
| 22 | Jean Paul Sartre | Man can will nothing unless he has first understood that he must count on no one but himself; that he is alone, abandoned on earth in the midst of his infinite responsibilities, without help, with no other aim than the one he sets himself, with no other destiny than the one he forges for himself on this earth. |
| 23 | Bible – Matthew 3 | If a house be divided against itself, that house cannot stand. |
| 24 | Isaac Newton | I do not know what I may appear to the world; but to myself I seem to have been only like a boy playing on the seashore, and diverting myself in now and then finding a smoother pebble or a prettier shell than ordinary, whilst the great ocean lay all undiscovered before me. |
| 25 | Albert Schweitzer | You don’t live in a world all alone. Your brothers are here too. |
| 26 | Confucius | If one learns from others but does not think, one will be bewildered. If, on the other hand, one thinks but does not learn from others, one will be in peril. |
| 27 | Jean Baptiste Moliere | We die only once, and for such a long time! |
| 28 | Pablo Picasso | Painting isn’t an aesthetic operation; it’s a form of magic designed as a mediator between this strange hostile world and us, a way of seizing the power by giving form to our terrors as well as our desires. |
| 29 | Suttapitaka | All that is is a result of what we have thought. |
| 30 | J. Krishnamurti | …we have to see the idea, the principle, the image from which all thinking begins, from which all our reactions come. |