There's place and means for every man alive.

Be thankful for what you have; you'll end up having more. If you concentrate on what you don't have, you will never, ever have enough

To forget is the secret of eternal youth. One grows old only through memory. There's much too little forgetting.

Today, more than ever before, life must be characterized by a sense of Universal responsibility, not only nation to nation and human to human, but also human to other forms of life.

Nature is not human-hearted.

Rudeness is the weak man's imitation of strength.

The knowledge of oneself will preserve that person from vanity.

There is no worse bitterness than to reach the end of your life and realized you have not lived.

It is not the length of life, but the depth.

I'm not sure I'm adult yet.

The present is theirs; the future, for which I really worked, is mine.

To conceal anything from those to whom I am attached, is not in my nature. I can never close my lips where I have opened my heart.

Courage is a kind of salvation.

All my life through, the new sights of nature made me rejoice like a child.

Each person must live their life as a model for others.

Science is the outcome of being prepared to live without certainty and therefore a mark of maturity. It embraces doubt and loose ends.

A wise girl kisses but doesn't love, listens but doesn't believe, and leaves before she is left.

And the day came when the risk to remain tight in a bud was more painful than the risk it took to blossom.

It is not the strongest of the species that survives, nor the most intelligent that survives. It is the one that is the most adaptable to change.

There are two things a person should never be angry at, what they can help, and what they cannot.

I can't wait to figure out what is wrong with me, so I can say this is the way that I used to be.