Because vision appears so effortless, we are like fish challenged to understand water.

Our internal life and external actions are steered by biological coctails to which we have neither immediate access nor direct acquaintance.

The more familiar the world becomes, the less information your brain writes down, and the more quickly time seems to pass.

At least 15 percent of human females possess a genetic mutation that gives them an extra (fourth) type of color photoreceptor - and this allows them to discriminate between colors that look identical to the majority of us with a mere three types of color photoreceptors.

The deep secret of the brain is that not only the spinal cord but the entire central nervous system works this way: internally generated activity is modulated by sensory input. In this view, the difference between being awake and being asleep is merely that the data coming in from the eyes anchors the perception.

I always bounce my legs when I'm sitting.

It is only through us that God lives. When we abandon him, he dies.