I am not interested in what today's mathematicians find interesting.

It is our responsibility as scientists, knowing the great progress which comes from a satisfactory philosophy of ignorance, the great progress which is the fruit of freedom of thought, to proclaim the value of this freedom; to teach how doubt is not to be feared but welcomed and discussed; and to demand this freedom as our duty to all coming generations.

If you know that you are not sure, you have a chance to improve the situation. I want to demand this freedom for future generations.

You can’t say A is made of B or vice versa. All mass is interaction.

There is no harm in doubt and skepticism, for it is through these that new discoveries are made.

Study hard what interests you the most in the most undisciplined, irreverent and original manner possible.

There's plenty of room at the bottom.