Our fatigue is often caused not by work, but by worry, frustration and resentment
It is a cursed evil to any man to become as absorbed in any subject as I am in mine
It is your decisions, and not your conditions, that determine your destiny.
One of the main weaknesses of mankind is the average man's familiarity with the word 'impossible'.
Make the lie big, make it simple, keep saying it, and eventually they will believe it
If you think your teacher is tough, wait until you get a boss. He doesn't have tenure.
To invent, you need a good imagination and a pile of junk.
Don't be afraid to give your best to what seemingly are small jobs. Every time you conquer one it makes you that much stronger. If you do the little jobs well, the big ones will tend to take care of themselves.
You don't have to be great to start, but you have to start to be great
Obstacles are those frightful things you see when you take your eyes off your goals.
It is amazing how much can be accomplished if no one cares who gets the credit.
No one ever is defeated until defeat has been accepted as a reality.
No man can taste the fruits of autumn while he is delighting his scent with the flowers of spring.
One must be sane to think clearly, but one can think deeply and be quite insane.
We don't know a millionth of one percent about anything.
Please all, and you will please none.
It is easier for a tutor to command than to teach.
If we all did the things we are really capable of doing, we would literally astound ourselves
I believe that anyone can conquer fear by doing the things he fears to do, provided he keeps doing them until he gets a record of successful experiences behind him.
When you play, play hard; when you work, don't play at all.
Every individual has his own style, his own way of presenting himself on and off the field.