Be courageous! Have faith! Go forward.

If I could solve all the problems myself, I would.

The value of an idea lies in the using of it.

Non-violence leads to the highest ethics, which is the goal of all evolution. Until we stop harming all other living beings, we are still savages.

I have not failed. I've just found 10000 ways that won't work. Thomas A.

Start with a reasonable investigation of some kind and make lots of experiments. You may not reach the goal you are seeking, but if you use common sense and keep your eyes open, you create your own opportunities for making worthwhile discoveries along the way.

We will make electricity so cheap that only the rich will burn candles.

The United States, and other advanced nations, will someday be able to produce instruments of death so terrible the world will be in abject terror of itself and its ability to end civilization.... Such war-making weapons should be developed -- but only for purposes of discovery and experimentation.

Smoking too much makes me nervous. Must lasso my natural tendency to acquire such habits. Holding heavy cigar constantly in my mouth has deformed my upper lip, it has a sort of Havana curl.

I didn't fail 1000 times. The light bulb was an invention with 1000 steps.

I cannot believe in the immortality of the soul. No, all this talk of an existence for us, as individuals, beyond the grave is wrong. It is born of our tenacity of life -- our desire to go on living -- our dread of coming to an end.

Genius? Nothing! Sticking to it is the genius! Any other bright-minded fellow can accomplish just as much if he will stick like hell and remember nothing that's any good works by itself. You've got to make the damn thing work!...I failed my way to success.

When down in the mouth, remember Jonah. He came out all right.

Barring serious accidents, if you are not preoccupied with worry and you work hard, you can look forward to a reasonably lengthy existence.... Its not the hard work that kills, its the worrying that kills.

Nineteen hundred and three will bring great advances in surgery, in the study of bacteria, in the knowledge of the cause and prevention of disease. Medicine is played out. Every new discovery of bacteria shows us all the more convincingly that we have been wrong and that the million tons of stuff we have taken was all useless.

To those searching for truth -- not the truth of dogma and darkness but the truth brought by reason, search, examination, and inquiry, discipline is required. For faith, as well intentioned as it may be, must be built on facts, not fiction -- faith in fiction is a damnable false hope.

I never did anything by accident, nor did any of my inventions come by accident; they came by work.

I know this world is ruled by Infinite Intelligence. It required Infinite Intelligence to create it and it requires Infinite Intelligence to keep it on its course ... It is mathematical in its precision.

Perhaps dandruff is the excreta of the mind — the quantity of this material being directly proportional to the amount of reading one indulges in. A book on German metaphysics would thus easily ruin a dress suit.

Religion is all bunk.