The man who is intent on making the most of his opportunities is too busy to bother about luck.

You can easily judge the character of a man by how he treats those who can do nothing for him.

I have made the most important discovery of my career, the most important discovery of my life: It is only in the mysterious equations of love that any logic or reasons can be found.

Classes will dull your mind, destroy the potential for authentic creativity.

The purpose of education is to replace an empty mind with an open one.

People are always selling the idea that people with mental illness are suffering. I think madness can be an escape. If things are not so good, you maybe want to imagine something better.

Too many people overvalue what they are not and undervalue what they are.

As you will find in multivariable calculus, there is often a number of solutions for any given problem.

Failure is success if we learn from it.

Rationality of thought imposes a limit on a person's concept of his relation to the cosmos.

The biggest mistake people make in life is not trying to make a living at doing what they most enjoy.

Be with people who question you, that's how you learn and grow.

I don’t think you can just choose to believe in God. You either do or you don’t, and no matter what camp you’re in, it would take something life-changing to truly lead you into the other one.

But in Africa bureaucrats are usually too proud to accept a bribe, something I admire when I'm not the one being arrested.

But how intolerable bright the morning is where we who are alive and remain, walk lifted up, carried forward by an effective word.

History is a process of transformation through conversation. In our efforts to produce change,we often forget how important it is to pay attention to what is being conserved.

The way to do much in a short time is to love much. People will do great things if they are stirred with enthusiasm and love.

The effectiveness of your work will never rise above your ability to lead and influence others.

And this also," said Marlow suddenly, "has been one of the dark places of the earth.

In all things let reason be your guide.

College totally changed my life. It changed what I believe and what I think about everything. I majored in philosophy.