The real voyage of discovery consists not in seeking new landscapes, but in having new eyes.

The poets and philosophers before me discovered the unconscious; what I discovered was the scientific method by which the unconscious can be studied.

I went to the woods because I wished to live deliberately, to front only the essential facts of life, and see if I could not learn what it had to teach, and not, when I came to die, discover that I had not lived.

Man can learn nothing unless he proceeds from the known to the unknown.

Man is a universe in little.

The greatest revolution of our generation is the discovery that human beings, by changing the inner attitudes of their minds, can change the outer aspects of their lives.

If I have ever made any valuable discoveries, it has been owning more to patient attention, than to any other talent.

We call first truths those we discover after all the others.

Let us affirm what seems to be the truth, that, whether one is or is not, one and the others in relation to themselves and one another, all of them, in every way, are and are not, and appear to be and appear not to be.

A problem well-put is half-solved.

The universe is wider than our views of it.

The hardest thing to explain is the glaring evident which everybody had decided not to see.

To raise new questions, new possibilities, to regard old problems from a new angle, requires creative imagination and marks real advance in science.

It is an ecological, theological, and biological reality: The more we are in tune with eternal nature, the more we will be able to hear the still small voice within and have explosions of inspirational insight.