However good a Constitution may be, if those who are implementing it are not good, it will prove to be bad. However bad a Constitution may be, if those implementing it are good, it will prove to be good.

The chief condition on which, life, health and vigor depend on, is action. It is by action that an organism develops its faculties, increases its energy, and attains the fulfillment of its destiny.

Being humble could be dangerous. Humility may be mistaken for submission.

At what point then is the approach of danger to be expected? I answer, if it ever reach us, it must spring up amongst us. It cannot come from abroad. If destruction be our lot, we must ourselves be its author and finisher. As a nation of freemen, we must live through all time, or die by suicide.

Without continual growth and progress, such words as improvement, achievement, and success have no meaning. 

There is no man living that can not do more than he thinks he can. 

I do not believe in immortality of the individual, and I consider ethics to be an exclusively human concern with no superhuman authority behind it.  

Each one has to find his peace from within. And peace to be real must be unaffected by outside circumstances.

Old friends pass away, new friends appear. It is just like the days. An old day passes, a new day arrives. The important thing is to make it meaningful: a meaningful friend - or a meaningful day.

Let freedom reign. The sun never set on so glorious a human achievement.

Open your eyes, look within. Are you satisfied with the life you're living?

And one more thing.