There we measure shadows, and we search among ghostly errors of measurement for landmarks that are scarcely more substantial.

We do not know why we are born into the world, but we can try to find out what sort of a world it is - at least in its physical aspects.

All nature is a vast symbolism: Every material fact has sheathed within it a spiritual truth.

Past time is finite, future time is infinite.

The history of astronomy is a history of receding horizons.

The universe is unfolding as it should.

I knew that even if I were second or third rate, it was astronomy that mattered.

Science is the one human activity that is truly progressive. The body of positive knowledge is transmitted from generation to generation.

Not until the empirical resources are exhausted, need we pass on to the dreamy realms of speculation.

Wisdom cannot be directly transmitted, and does not readily accumulate through the ages.

The great spirals, with their enormous radial velocities and insensible proper motions, apparently lie outside our Solar system.

Time given out through jobs can be channeled into something productive

we founded Editas Medicine with $43 million in financing from three venture capital firms.

There are dark shadows on the earth, but its lights are stronger in the contrast.

I look at my people, and I look at those who control them - the political elite. And the sad thing is that the elites are just not interested in the welfare of the people.

You don't know what's on the inside until you put a demand on your potential.

Haiti is closer to anarchy than it is to anything else.

There is no magic to achievement. It's really about hard work, choices, and persistence.

For centuries, magicians have intuitively taken advantage of the inner workings of our brains.

We have to treat others as part of who we are, rather than as a 'them' with whom we are in constant competition.

And what it depends on, of course, is whether the story itself is worth the ethical compromise it requires and whether the competition is onto the story.