To forget a friend is sad. Not every one has had a friend. And if I forget him, I may become like the grown−ups who are no longer interested in anything but figures.

If you want to build a ship, don't summon people to buy wood, prepare tools, distribute jobs, and organize the work; teach people the yearning for the wide, boundless ocean.

The one thing that matters is the effort.

All of us have had the experience of a sudden joy that came when nothing in the world had forewarned us of its coming - a joy so thrilling that if it was born of misery we remembered even the misery with tenderness.

I have always learned to distinguish the important from the urgent.

When we think that the machine will harm man, then it is perhaps because we are not yet capable of judging the rapid changes it has brought about. We hardly feel at home in this landscape of mines and power stations. We have just moved into this new home that we have not even finished yet. Everything around us has changed so fast - personal relations, working conditions, habits. Even our state of mind is in turmoil.

"What place would you advise me to visit now?" he asked. "The planet Earth," replied the geographer. "It has a good reputation."