A man who does not think for himself does not think at all.

A man who does not think for himself does not think at all.

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

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

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.

You can fool too many of the people too much of the time.

You can fool too many of the people too much of the time.

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.

We shall require a substantially new manner of thinking if
mankind is to survive.

We shall require a substantially new manner of thinking if
mankind is to survive.

Think wrongly, if you please, but in all cases think for yourself.

Think wrongly, if you please, but in all cases think for yourself.

Small is the number of people who see with their eyes and think
with their minds.

Small is the number of people who see with their eyes and think
with their minds.

She that fails to command her thoughts will soon lose command of her actions

She that fails to command her thoughts will soon lose command of her actions