It takes courage to know when you ought to be afraid.

The permanent temptation of life is to confuse dreams with reality. The permanent defeat of life comes when dreams are surrendered to reality.

If you reject the food, ignore the customs, fear the religion and avoid the people, you might better stay at home.

If you reject the food, ignore the customs, fear the religion and avoid the people, you might better stay at home.

Scientists dream about doing great things. Engineers do them.