Alexander graham bell citações

1. "When one door closes, another opens; but we often look so long and so regretfully upon the closed door that we do not see the one which has opened for us."

2. "Before anything else, preparation is the key to success."

3. "Great discoveries and improvements invariably involve the cooperation of many minds."

4. "Concentrate all your thoughts upon the work at hand. The sun's rays do not burn until brought to a focus."

5. "The only difference between success and failure is the ability to take action."

6. "Leave the beaten track occasionally and dive into the woods. Every time you do, you will be certain to find something you have never seen before."

7. "The inventor looks upon the world and is not contented with things as they are. He wants to improve whatever he sees, he wants to benefit the world; he is haunted by an idea. The spirit of invention possesses him, seeking materialization."

8. "When one door closes, another opens; but we often look so long and so regretfully upon the closed door that we do not see the one which has opened for us."

9. "The most successful men in the end are those whose success is the result of steady accretion."

10. "The day will come when the man at the telephone will be able to see the distant person to whom he is speaking."