A person who thinks all the time has nothing to think about except thoughts, so he loses touch with reality and lives in a world of illusions.

A person who thinks all the time has nothing to think about except thoughts. So he loses touch with reality, and lives in a world of illusion.

A person that thinks all the time has nothing to think about except thoughts.

Only those are happy who never think or, rather, who only think about life's bare necessities, and to think about such things means not to think at all. True thinking resembles a demon who muddies the spring of life or a sickness which corrupts its roots. To think all the time, to raise questions, to doubt your own destiny, to feel the weariness of living, to be worn out to the point of exhaustion by thoughts and life, to leave behind you, as symbols of your life's drama, a trail of smoke and blood — all this means you are so unhappy that reflection and thinking appear as a curse causing a violent revulsion in you.

Indeed it may be said with some confidence that the average man never really thinks from end to end of his life. There are moments when his cogitations are relatively more respectable than usual, but even at their climaxes they never reach anything properly describable as the level of serious thought. The mental activity of such people is only a mouthing of clichés. What they mistake for thought is simply a repetition of what they have heard. My guess is that well over eighty per cent. of the human race goes through life without having a single original thought. That is to say, they never think anything that has not been thought before and by thousands.

You are what you think about when you have nothing to think about.

The tragedy of a thoughtless man is not that he doesn't think, but that he thinks that he's thinking.

To think too much is a disease.

Si todo el mundo piensa igual es que alguien no está pensando.

You become what you think about all day long.

You become what you think about all day long.

If everybody is thinking alike, then somebody isn't thinking.

If everyone is thinking alike, then somebody isn't thinking.

The human condition: lost in thought.