The most important tool in chemistry is not the flask or the spectrometer—it's the imagination.

We never cease to stand like curious children before the great mystery into which we were born.

When you arrive at your room in a hotel， locate the emergency exits. It only takes a minute.

Technology should be invisible. When it's working best, you don't even notice it.

When you're responsible for feeding families, every decision carries weight.

The human being is always more than what he knows of himself.