A common mistake that people make when trying to design something completely foolproof is to underestimate the ingenuity of complete fools.
If you don't behave as you believe, you will end by believing as you behave.
No one cares how much you know, until they know how much you care
Never pick a fight with an ugly person, they've got nothing to lose.
It is neither good nor bad, but thinking makes it so.
An understanding of the natural world is a source of not only great curiosity, but great fulfilment.
Stubborn and ardent clinging to one's opinion is the best proof of stupidity.
Most of us have far more courage than we ever dreamed possible
Learning and wisdom are superfluities, the surface glitter merely, but it is the heart that is the seat of all power.
I've never known any trouble than an hour's reading didn't assuage.
The only limit to our realization of tomorrow will be our doubts of today.
Everything we hear is an opinion, not a fact. Everything we see is a perspective, not the truth.
All great achievements require time.
The trouble with most of us is that we would rather be ruined by praise than saved by criticism.
So many people have this idea: I want to achieve something great or be somebody great. And they neglect the step that leads to greatness. They don't honor this step at this moment because they have this idea of some future moment where they are going to be great.
A man is literally what he thinks.
In the practice of tolerance, one's enemy is the best teacher.
Knowing is not enough, we must apply. Willing is not enough, we must do.
If you do not know the laws of right conduct, you cannot form your character.
Just remember, once you're over the hill you begin to pick up speed.
Colorless green ideas sleep furiously
