George Santayana

A man's feet should be planted in his country, but his eyes should survey the world.

It is easier to make a saint out of a libertine than out of a prig.

Habit is stronger than reason.

Wisdom outweighs any wealth.

If we look at the life cycle of technologies, we see an early period of over-enthusiasm, then a 'bust' when disillusionment sets in, followed by the real revolution.