The time you enjoy wasting is not wasted time.

I think it's much more interesting to live not knowing than to have answers which might be wrong.

Hard work, disciplined habits, modesty in living, contentment and cheerfulness.

Enjoy when you can, and endure when you must.

In three words I can sum up everything I've learned about life: it goes on.

All of us are products of our childhood.

It is easier to influence strong than weak characters in life.

Life is not easy for any of us. But what of that? We must have perseverance and above all confidence in ourselves. We must believe that we are gifted for something and that this thing must be attained.

Do not wait for the last judgment. It comes every day.

There are two tragedies in life. One is to lose your heart's desire. The other is to gain it.

The earth is like a spaceship that didn't come with an operating manual.

Consistency is contrary to nature, contrary to life. The only completely consistent people are the dead.

If people do not believe that mathematics is simple, it is only because they do not realize how complicated life is.

There are only two ways to live your life. One is as though nothing is a miracle. The other is as though everything is a miracle.

It was my care to make my life illustrious not by words more than by deeds.

This thing of being a hero, about the main thing to it is to know when to die.

The knowledge of oneself will preserve that person from vanity.

What is that you express in your eyes? It seems to me more than all the words I have read in my life.

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

All my life I used to wonder what I would become when I grew up. Then, about seven years ago, I realized that I was never going to grow up - that growing is an ever ongoing process.

A lie told often enough becomes the truth.