You cannot truly listen to anyone and do anything else at the same time.

The essence of knowledge is, having it, to apply it; not having it, to confess your ignorance.

There is a wisdom of the head, and... there is a wisdom of the heart.

Confidence is contagious. So is lack of confidence.

Beauty is not in the face; beauty is a light in the heart.

Wonder is the beginning of wisdom.

Only idiots refuse to change their minds.

We choose our joys and sorrows long before we experience them.

All that we see or seem is but a dream within a dream.

All differences in this world are of degree, and not of kind, because oneness is the secret of everything.

He who chooses the beginning of the road chooses the place it leads to.

Doubt is the origin of wisdom

The only real mistake is the one from which we learn nothing.

Great dreams of great dreamers are always transcended.

Science is organized knowledge. Wisdom is organized life.

Every act of creation is first an act of destruction.

Convictions are more dangerous enemies of truth than lies.

The ultimate authority must always rest with the individual's own reason and critical analysis.

Mistakes are always forgivable, if one has the courage to admit them.

Don't compromise yourself. You are all you've got.

Only from the heart can you touch the sky.