Do not, for one repulse, give up the purpose that you resolved to achieve. (Shakespeare, British dramatist)

Do not, for one repulse, give up the purpose that you resolved to achieve. (Shakespeare, British dramatist)

Don't give up your fantasy. When they are gone, you may still exist, but you have stopped living. (Mark Twain, American writer)

Don't give up your fantasy. When the illusion is gone, you can still exist, but you are still alive. (Mark Twain, American writer)

I want to reveal the secrets of nature and use them for human happiness. In our short life, I don't know what better service there is. (Thomas Edison, American inventor)

I want to reveal the secrets of nature and benefit mankind. In my opinion, there is no better contribution in our short life. (Thomas Edison, American inventor)

If winter comes, can spring be far behind? (Shelley, British poet)

If winter comes, can spring be far behind? (Shelley, British poet)

If you doubt yourself, then indeed you stand on shaky ground. (

(Ibsen, Norwegian dramatist)

If you doubt yourself, then indeed you stand on shaky ground. (Ibsen, Norwegian dramatist)

It is at our mother's knee that we acquire our noblest and truest and highest, but there is seldom any money in them. (Mark Twain, American writer)

It is at our mother's knee that we acquire our noblest and truest and highest, but there is seldom any money in them. (Mark Twain, American writer)

Living without an aim is like sailing without a compass.

Alexandre Dumas (French writer)

Living without an aim is like sailing without a compass. (French writer alexandre dumasfils)

The important thing in life is to have a great goal and the determination to achieve it. (Goethe, German poet and playwright)

The important thing in life is to have a great goal and the determination to achieve it. (Goethe, German poet and playwright)

The man with a new idea is a crank until the idea succeeds. (Mark Twain, American writer)

The man with a new idea is a crank until the idea succeeds. (Mark Twain, American writer)

The only obstacle to tomorrow is our doubts today. (Franklin Roosevelt, American President)

The only obstacle to tomorrow is our doubts today. (Franklin Roosevelt, American President)

When an end is legal and necessary, so are the necessary means to achieve it. (Abraham Lincoln, American statesman)

When an end is legal and necessary, so are the necessary means to achieve it. (Abraham Lincoln, American statesman)