Please, not again what you studied, how long you spent at it, how many books you wrote, what people thought of you - but: what did you learn?

The word 'choice' is a fraud while people choose only what they have been taught to choose.

Opinion is usually something which people have when they lack comprehensive information.

Have you noticed how many people who walk in the shade curse the Sun?

Knowledge is something which you can use. Belief is something which uses you.

If, from time to time, you give up expectation, you will be able to perceive what it is you are getting.

The proverb says that 'The answer to a fool is silence'. Observation, however, indicates that almost any other answer will have the same effect in the long run.

To 'see both sides' of a problem is the surest way to prevent its complete solution. Because there are always more than two sides.

Advice is priceless: when it becomes interference it is preposterous.

A real secret is something which only one person knows.

Prescribing hard work for the soft, or easy work for the hardy, is generally nonsense. What is always needed in any aim is right effort, right time, right people, right materials.

I tell you, you will not see the new beauty and the truth, until you make up your minds to spit.

I don't want to have to give up me, in order to be his.

Killing is killing, whether done for duty, profit or fun

In the end we shall have had enough of cynicism, skepticism and humbug, and we shall want to live more musically.

Although God believers don't need evolution to be false, atheists need evolution to be true.

One of the things this world is finding is that emotion is the basis of reason. We really have to trust our emotions, which are much smarter than our reason in some ways.

I've been a kind of a wildcatter. I've been able to say anything I wanted.

The day misspent, the love misplaced, has inside it the seed of redemption. Nothing is exempt from resurrection.

Every viewer who ever turned on Doctor Who has taken him into his heart. He belongs to all of us.

I see you got a crew cut...and the crew never came back!