The dove is my emblem.

The greatest invention in the world is the mind of a child.

My mother was the making of me. She was so true and so sure of me, I felt that I had someone to live for - someone I must not disappoint. The memory of my mother will always be a blessing to me.

My mind is incapable of conceiving such a thing as a soul. I may be in error, and man may have a soul; but I simply do not believe it.

What is a college? An institute of learning. What is a business? An institute of learning. Life, itself, is an institute of learning.

Great ideas originate in the muscles.

Because I readily absorb ideas from every source - frequently starting where the last person left off - I never pick up an item without thinking of how I might improve it.