Pessimism, when you get used to it, is just as agreeable as optimism.

Your own mind is a sacred enclosure into which nothing harmful can enter except by your permission.

Any change, even a change for the better, is always accompanied by drawbacks and discomforts.

There can be no knowledge without emotion. We may be aware of a truth, yet until we have felt its force, it is not ours. To the cognition of the brain must be added the experience of the soul.

Its language is a language which the soul alone understands, but which the soul can never translate.

The best cure for worry, depression, melancholy, brooding, is to go deliberately forth and try to lift with one's sympathy the gloom of somebody else.

Worry is evidence of an ill-controlled brain; it is merely a stupid waste of time in unpleasantness.

It is easier to go down a hill than up, but the view is from the top.

The real Tragedy is the tragedy of the man who never in his life braces himself for his one supreme effort-he never stretches to his full capacity, never stands up to his full stature.

Of all the inhabitants of the inferno, none but Lucifer knows that hell is hell, and the secret function of purgatory is to make of heaven an effective reality.

Falsehood often lurks upon the tongue of him, who, by self-praise, seeks to enhance his value in the eyes of others.

One's own yesterday is a ghost that will not be laid down.

She wept with shame for her lack of will and with fear for a love she couldn't control.

I think we can all use a little more patience. I get a little impatient sometimes and I wish I didn't. I really need to be more patient.

This individual does not know where initiative ends and rocket-propelled idiocy begins.

If the apple hit Newton’s nose, Newton’s nose hit the apple.

Entrepreneurship may be the most under-taught subject.

People would say, "You know, Rich, it's nature. Birds of a feather flock together." I have to point out to them that, no, that's not the case.

What drives me is exploration with a purpose, more the classic Royal Geographical Society genre.

Everyone in this room knows that Venus is probably one of the greatest people on the tour. She's really great. She's super professional. Complete opposite of me.

I think it's important to have as much as a normal life and take the time to get perspective because it only helps your work in the long run.