You must do the thing you think you cannot do.

What you are not, you can never be, until and unless you do something about it.

There is no failure except in no longer trying.

The average person puts only 25% of his energy and ability into his work. The world takes off its hat to those who put in more than 50% of their capacity, and stands on its head for those few and far between souls who devote 100%.

Actions are right in proportion as they promote happiness, wrong as the produce the reverse.

A really great talent finds its happiness in execution.

The bravest sight in the world is to see a great man struggling against adversity.

But the bravest are surely those who have the clearest vision of what is before them, glory and danger alike, and yet notwithstanding go out to meet it.

The brave person thinks of themselves last of all.

I find the great thing in this world is not so much where we stand, as in what direction we are moving: To reach the port of heaven, we must sail sometimes with the wind and sometimes against it—but we must sail, and not drift, nor lie at anchor.

I've been absolutely terrified every moment of my life—and I've never let it keep me from doing a single thing I wanted to do.

What though strength fails? Boldness is certain to win praise. In mighty enterprises, it is enough to have had the determination.

A man is as big as the measure of his thinking.

You don’t have to depend on any material possessions, they depend on you, you create them, you own the one and only tool of production.

The man who has anticipated the coming of troubles takes away their power when they arrive.

Feeling sorry for yourself, and your present condition, is not only a waste of energy but the worst habit you could possibly have.

He who fears he shall suffer, already suffers what he fears.

The great decisions of human life have as a rule far more to do with the instincts and other mysterious unconscious factors than with conscious will and well-meaning reasonableness.

Until you make the unconscious conscious, it will direct your life and you will call it fate.

If you want to be happy, set a goal that commands your thoughts, liberates your energy and inspires your hopes.