The human mind will not be confined to any limits.

There is but one cause of human failure. And that is man’s lack of faith in his true Self.

Man, unlike anything organic or inorganic in the universe, grows beyond his work, walks up the stairs of his concepts, emerges ahead of his accomplishments.

Culture is the process by which a person becomes all that they were created capable of being.

More gold has been mined from the thoughts of men than has been taken from the earth.

There are no constraints on the human mind, no walls around the human spirit, no barriers to our progress except those we ourselves erect.

What the mind of man can conceive and believe, it can achieve.

The energy of the mind is the essence of life.

If you’re a human being, you can attempt to do what other human beings have done. We don’t understand talent any more than we understand electricity.

The power of imagination makes us infinite.

I must have a prodigious quantity of mind; it takes me as much as a week sometimes to make it up.

Nothing that was worthy in the past departs; no truth or goodness realized by man ever dies, or can die.

Neither sex, without some fertilization of the complimentary characters of the other, is capable of the highest reaches of human endeavor.

As long as my music is real, it’s no limit to how many ears I can grab.

People with great gifts are easy to find, but symmetrical and balanced ones never.

And so you touch this limit, something happens and you suddenly can go a little bit further. With your mind power, your determination, your instinct, and the experience as well, you can fly very high.

I always had a repulsive need to be something more than human.

Something I’ve realized lately, to my shock, is that I am an optimist, in that I think humans are almost infinitely capable of self-change and self-modification, and that we really can build the future that we want if we’re smart about it.

Because your own strength is unequal to the task, do not assume that it is beyond the powers of man; but if anything is within the powers and province of man, believe that it is within your own compass also.