Know what you are talking about.
If there were no bad people, there would be no good lawyers.
Evil being the root of mystery, pain is the root of knowledge.
Most people have never learned that one of the main aims in life is to enjoy it.
It isn't what we don't know that gives us trouble, it's what we know that ain't so.
In mathematics you don't understand things. You just get used to them.
I have just three things to teach: simplicity, patience, compassion. These three are your greatest treasures.
Study without desire spoils the memory, and it retains nothing that it takes in.
Knowledge, Action, Devotion are complementary to each other.
To read is to fly: it is to soar to a point of vantage which gives a view over wide terrains of history, human variety, ideas, shared experience and the fruits of many inquiries.
It took us three years to build the NeXT computer. If we'd given customers what they said they wanted, we'd have built a computer they'd have been happy with a year after we spoke to them - not something they'd want now.
Learn as though you would never be able to master it; hold it as though you would be in fear of losing it.
You can never learn less, you can only learn more.
If one cannot enjoy reading a book over and over again, there is no use in reading it at all.
A spirit of national masochism prevails, encouraged by an effete corps of impudent snobs who characterize themselves as intellectuals.
I think that kids have a greater capacity for processing things than we give them credit for.
Real knowledge is to know the extent of one's ignorance.
Science is a way of thinking much more than it is a body of knowledge.
Reading is to the mind what exercise is to the body.
The real solution lies in a world in which charity will have become unnecessary.
Learning gives creativity, Creativity leads to thinking, Thinking provides knowledge, Knowledge makes you great.