Never give up. Today is hard, tomorrow will be worse, but the day after tomorrow will be sunshine.

People only see what they are prepared to see.

We are drowning in information but starved for knowledge.

Perplexity is the beginning of knowledge.

You teach best what you most need to learn.

The possession of knowledge does not kill the sense of wonder and mystery. There is always more mystery.

Once you learn to quit, it becomes a habit.

The ability to perceive or think differently is more important than the knowledge gained.

The first step towards knowledge is to know that we are ignorant.

Patience is a virtue, and I'm learning patience. It's a tough lesson.