The world does not pay men for that which they 'know'. It pays them for what they do, or induce others to do.
I readily absorb ideas from every source, frequently starting where the last person left off
Without a humble but reasonable confidence in your own powers you cannot be successful or happy.
Purity, patience, and perseverance are the three essentials to success and, above all, love.
Speak softly and carry a big stick; you will go far.
Hell, there are no rules here - we're trying to accomplish something.
One must be sane to think clearly, but one can think deeply and be quite insane.
Many people would no more think of entering journalism than the sewage business - which at least does us all some good.
I don't want to achieve immortality through my work... I want to achieve it through not dying.
Obstacles are those frightful things you see when you take your eyes off your goals.
Players with fight never lose a game, they just run out of time
In every job that must be done, there is an element of fun. You find the fun and - SNAP - the job's a game!
It is your decisions, and not your conditions, that determine your destiny.
You've got to be very careful if you don't know where you're going, because you might not get there.
The day science begins to study non-physical phenomena, it will make more progress in one decade than in all the previous centuries of its existence.
Why, look at me. I've worked my way up from nothing to a state of extreme poverty.
True progress quietly and persistently moves along without notice.
Whosoever desires constant success must change his conduct with the times.
No man needs sympathy because he has to work, because he has a burden to carry. Far and away the best prize that life offers is the chance to work hard at work worth doing.
You don't get paid for the hour. You get paid for the value you bring to the hour.
Inspiration exists, but it has to find you working.