here is a great difference between knowing a thing and understanding it. You can know a lot and not really understand anything.

The opportunities in this world are as great as we have the imagination to see them... but we never get that view from the bottom of the nest.

The difference between intelligence and an education is this: that intelligence will make a good living for you, but education won't do much for you at all.

In many ways ideas are more important than people - they are much more permanent.

It is man's destiny to ponder on the riddle of existence and, as a byproduct of his wonderment, to create a new life on this earth.

Nothing ever built arose to touch the skies unless some man dreamed that it should, some man believed that it could, and some man willed that it must.

99 percent of success is built on failure.