Wendy Mass

The trick is that as long as you know who you are and what makes you happy, it doesn't matter how others see you.

Everything we think we know is really only perceived by our senses,' he explains patiently. 'The sounds we hear are just waves in the air; colors are electromagnetic radiation; your sense of taste comes from molecules that match a specific area on your tongue. Hey, if our eyes could access the infrared part of the light spectrum, the sky would be green and trees would be red. Some animals see in completely different ways, so who knows what colors look like to them. Nothing is really how we perceive it.

We are here because over billions of years, countless variables fell into place, any of which could have taken another path. We are essentially a beautiful fluke, as are the millions of other species with which we share this planet. Our cells are composed of atoms and dust particles from distant galaxies, and from the billions of living organisms that inhabited this planet before us.