The more you learn, the more you know. The more you know, the more you forget. The more you forget, the less you know. So why bother to learn.

There is no way that we can predict the weather six months ahead beyond giving the seasonal average.

One can't predict the weather more than a few days in advance.

Every man should marry. After all, happiness is not the only thing in life.

The increase of disorder or entropy with time is one example of what is called an arrow of time, something that distinguishes the past from the future, giving a direction to time.

Then we shall... be able to take part in the discussion of the question of why it is that we and the universe exist. If we find the answer to that, it would be the ultimate triumph of human reason - for then we would know the mind of God.

A zero-gravity flight is a first step toward space travel.