The greatest discovery of my generation is that a human being can alter his life by altering his attitudes of mind.

• mind
• attitude

The greatest use of life is to spend it for something that will outlast it.

• purpose
• legacy

There is only one thing a philosopher can be relied upon to do, and that is to contradict other philosophers.

• philosophy

Human beings, by changing the inner attitudes of their minds, can change the outer aspects of their lives.

• mind
• attitude
• self improvement

Sow an action and you reap a habit; sow a habit and you reap a character; sow a character and you reap a destiny.

• character
• actions
• habit
• destiny

Nothing is so fatiguing as the eternal hanging on of an uncompleted task.

• time management

A great many people think they are thinking when they are merely rearranging their prejudices.

• thought

Most people never run far enough on their first wind to find out they’ve got a second.

• persistence