What is worth having is worth working for.

And think what worrying does: has anyone ever added a single hour to the length of his life by worrying about it?

When you live for many hundreds of years, you know that every opportunity will come again.

It takes long practice, yes. You have to work. Did you think you could snap your fingers, and have it as a gift? What is worth having is worth working for.

Gradually, at various points in our childhoods, we discover different forms of conviction. There's the rock-hard certainty of personal experience ("I put my finger in the fire and it hurt,"), which is probably the earliest kind we learn. Then there's the logically convincing, which we probably come to first through maths, in the context of Pythagoras's theorem or something similar, and which, if we first encounter it at exactly the right moment, bursts on our minds like sunrise with the whole universe playing a great chord of C Major.

Maybe sometimes we don't do the right thing because the wrong thing looks more dangerous, and we don't want to look scared, so we go and do the wrong thing just because it's dangerous. We're more concerned with not looking scared than with judging right.

Symbols and emblems were everywhere. Buildings and pictures were designed to be read like books. Everything stood for something else; if you had the right dictionary, you could read Nature itself. It was hardly surprising to find philosophers using the symbolism of their time to interpret knowledge that came from a mysterious source.