A man thinking or working is always alone, let him be where he
will.

A man thinking or working is always alone, let him be where he
will.

I think and think for months and years. Ninety-nine times, the
conclusion is false. The hundredth time I am read more

I think and think for months and years. Ninety-nine times, the
conclusion is false. The hundredth time I am right.

We only think when we are confronted with a problem.

We only think when we are confronted with a problem.

A man is not idle because he is absorbed in thought. There is a visible labor and an invisible labor.

A man is not idle because he is absorbed in thought. There is a visible labor and an invisible labor.

Most people are unable to write because they are unable to think, and they are unable to think because they read more

Most people are unable to write because they are unable to think, and they are unable to think because they congenitally lack the equipment to do so, just as they congenitally lack the equipment to fly over the moon.

I don't pretend we have all the answers. But the questions are certainly worth thinking about.

I don't pretend we have all the answers. But the questions are certainly worth thinking about.

Many men owe the grandeur of their lives to the tremendous difficulties

Many men owe the grandeur of their lives to the tremendous difficulties

Take time to deliberate; but when the time for action arrives, stop thinking and go in.

Take time to deliberate; but when the time for action arrives, stop thinking and go in.

There is no expedient to which a man will not go to avoid the labor of thinking.

There is no expedient to which a man will not go to avoid the labor of thinking.