Life is and will ever remain an equation incapable of solution, but it contains certain known factors.
We crave for new sensations but soon become indifferent to them. The wonders of yesterday are today common occurrences
You may live to see man-made horrors beyond your comprehension.
I do not think you can name many great inventions that have been made by married men.
The present is theirs; the future, for which I really worked, is mine.
The progressive development of man is vitally dependent on invention. It is the most important product of his creative brain.