If you're going through hell, keep going. 

Truth is by nature self-evident. As soon as you remove the cobwebs of ignorance that surround it, it shines clear.

The distinction between the past, present and future is only a stubbornly persistent illusion.

All these primary impulses, not easily described in words, are the springs of man's actions. 

Me only have one ambition, y'know. I only have one thing I really like to see happen. I like to see mankind live together - black, white, Chinese, everyone - that's all.

To turn really interesting ideas and fledgling technologies into a company that can continue to innovate for years, it requires a lot of disciplines.

Your future can be secured by what you are sowing today—not what you are harvesting today.

My parents shared not only an improbable love, they shared an abiding faith in the possibilities of this nation. They would give me an African name, Barack, or blessed, believing that in a tolerant America your name is no barrier to success.

Few people are capable of expressing with equanimity opinions which differ from the prejudices of their social environment. Most people are even capable of forming such opinions.

I dream of the realization of the unity of Africa, whereby its leaders combine in their efforts to solve the problems of this continent. I dream of our vast deserts, of our forests, of all our great wildernesses.

The water in a vessel is sparkling; the water in the sea is dark. The small truth has words which are clear; the great truth has great silence.

Climbing to the top demands strength, whether it is to the top of Mount Everest or to the top of your career.