One must be sane to think clearly, but one can think deeply and be quite insane.

It had long since come to my attention that people of accomplishment rarely sat back and let things happen to them. They went out and happened to things.

If you don't have time to do it right, when will you have the time to do it over?

The man who is swimming against the stream knows the strength of it.

It’s not about what it is, it’s about what it can become.

Kill my boss? Do I dare live out the American dream?

The destination of the seeker… depends on the road he takes.

If you wish success in life, make perseverance your bosom friend, experience your wise counselor, caution your elder brother and hope your guardian genius.

A man paints with his brains and not with his hands.

You can't make souffle rise twice.

Only put off until tomorrow what you are willing to die having left undone

Vision without execution is just hallucination.

There is nothing impossible to him who will try.

By failing to prepare, you are preparing to fail.

Why, look at me. I've worked my way up from nothing to a state of extreme poverty.

I readily absorb ideas from every source, frequently starting where the last person left off

Leadership and learning are indispensable to each other.

True progress quietly and persistently moves along without notice.

If you aim at nothing, you will hit it every time.

It is easier for a tutor to command than to teach.

Rich people have small TVs and big libraries, and poor people have small libraries and big TVs.