Sustainability is living on nature's income rather than living on its capital.

Enthusiasm is followed by disappointment and even depression, and then by renewed enthusiasm.

Modern education is like being taken to the world's greatest restaurant & being forced to eat the menu.

The world of the quark has everything to do with a jaguar circling in the night.

If someone says that he can think or talk about quantum physics without becoming dizzy, that shows only that he has not understood anything whatever about it.

Everything that is not forbidden is compulsory.

Niels Bohr brainwashed a whole generation of theorists into thinking that the job (interpreting quantum theory) was done 50 years ago.

You know, there was a time, just before I started to study physical science, when astronomers thought that systems such as we have here in the solar system required a rare triple collision of stars

Both biological and cultural diversity are now severely threatened and working for their preservation is a critical task.

I would recommend that skeptics devote even more effort than they do now to understanding the reasons why so many people want or need to believe.

What is especially striking and remarkable is that in fundamental physics a beautiful or elegant theory is more likely to be right than a theory that is inelegant.

I gave you up and died a little each day

What are you gonna do, angel face? Stab me with your eyebrow pencil?

Confronted with such flagrant acts of intolerance—such abuses of the freedom of speech—a free society must surely do more. For intolerance is the one thing a free society cannot afford to tolerate.

I wanted to be a veterinarian until I saw a video of a vet performing surgery on a dog. Then I decided I wanted to be a pianist.

It takes a courageous fool to say things that have not been said and to do things that have not been done.

The acrid scents of autumn, Reminiscent of slinking beasts, make me fear

A mystery is solved with a story.

The gravity of the time is such that every new avenue of peace, no matter how dimly discernible, should be explored.

If you allow failure to take on more of a role in your life than possible, then you'll always look at it on the defense and you'll always shoot yourself down before it even goes anywhere.

As Indians, we must of course learn from the past; but we must remain focused on the future. In my view, education is the true alchemy that can bring India its next golden age.