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.
My art and profession is to live.
Doubt must be no more than vigilance, otherwise it can become dangerous.
No passion in the world is equal to the passion to alter someone else's draft.
Old age is by nature rather talkative.
Doing nothing is happiness for children and misery for old men.
Life does not need to mutilate itself in order to be pure.
Time is the best killer.
I want to feel my life while I'm in it.
There is nothing more frightful than ignorance in action.
Life can be pulled by goals just as surely as it can be pushed by drives.
Science is the most reliable guide for civilization, for life, for success in the world. Searching a guide other than the science is meaning carelessness, ignorance and heresy.
If people do not believe that mathematics is simple, it is only because they do not realize how complicated life is.
We live in a society exquisitely dependent on science and technology, in which hardly anyone knows anything about science and technology.
All my life through, the new sights of nature made me rejoice like a child.
Do not erase the designs the child makes in the soft wax of his inner life.
Death is not the opposite of life, but a part of it.
We don't see things as they are, we see them as we are.
Early in life I had to choose between honest arrogance and hypocritical humility. I chose the former and have seen no reason to change.
Live as if you were living a second time, and as though you had acted wrongly the first time.
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.