An idea that is developed and put into action is more important than an idea that exists only as an idea.

The only way of discovering the limits of the possible is to venture a little way past them into the impossible.

We shall never know all the good that a simple smile can do.

Be the flame, not the moth.

The only true happiness is to learn, to advance, and to improve.

Your true worth is determined by how much more you give in value than you take in payment.

You have to grow from the inside out. None can teach you, none can make you spiritual. There is no other teacher but your own soul.