Every time I see an adult on a bicycle, I no longer despair for the future of the human race.

In order to seek truth, it is necessary once in the course of our life to doubt, as far as possible, of all things.

Quick sensitivity is inseperable from a ready understanding.

If it is worth doing, it is worth overdoing.

Be thankful that you have a life, and forsake your vain and presumptuous desire for a second one.

Wrinkles should merely indicate where the smiles have been.

We keep moving forward, opening new doors, and doing new things, because we're curious and curiosity keeps leading us down new paths.

We fear our highest possibility (as well as our lowest one). We are generally afraid to become that which we can glimpse in our most perfect moments.

Nothing exists except atoms and empty space; everything else is opinion.

I desire to live in peace and to continue the life I have begun under the motto 'to live well you must live unseen'

You are not stuck where you are unless you decide to be.

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.

Open your eyes, look within. Are you satisfied with the life you're living?

The more sand that has escaped from the hourglass of our life, the clearer we should see through it.

Life is more or less a lie, but then again, that's exactly the way we want it to be.

I can choose either to be a victim of the world or an adventurer in search of treasure. It's all a question of how I view my life.

Life swings like a pendulum backward and forward between pain and boredom.

One of the saddest things in life, is the things one remembers.

Fortune cannot aid those who do nothing.

The knowledge of oneself will preserve that person from vanity.

Short as life is, we make it still shorter by the careless waste of time.