“If your life's work can be accomplished in your lifetime, you're not thinking big enough.”

“If "thank you" is the only prayer you can utter in your lifetime, that would be enough.”

Meister Eckhart (1260–1328) German theologian

“Above all, never think you're not good enough. Never think that. In life people will take you at your own reckoning.”

Isaac Asimov (1920–1992) American writer and professor of biochemistry at Boston University, known for his works of science fiction …

“The key to a good life is this: If you're not going to talk about something during the last hour of your life, then don't make it a top priority during your lifetime.”

Richard Carlson (1961–2006) Author, psychotherapist and motivational speaker

“I believe the ability to think is blessed. If you can think about a situation, you can deal with it. The big struggle is to keep your head clear enough to think.”

Richard Pryor (1940–2005) American stand-up comedian, actor, social critic, writer, and MC

“If a rat is a good model for your emotional life, you're in big trouble.”

Robert M. Sapolsky (1957) American endocrinologist

“So much working, reading, thinking, living to do! A lifetime is not long enough.”

Sylvia Plath (1932–1963) American poet, novelist and short story writer

“If you doubt you can accomplish something, then you can't accomplish it. You have to have confidence in your ability, and then be tough enough to follow through.”

Rosalynn Carter (1927) Wife of the 39th President of the United States, Jimmy Carter

“How can you sleep
How can you turn away
Thinking so cheap?
Some day you're gonna pay!
You're keeping secrets
I can see in your eyes:
Can anybody tell me
Why the big disguise?”

Mike Oldfield (1953) English musician, multi-instrumentalist

“Above all things, never think that you're not good enough yourself. A man should never think that. My belief is that in life people will take you very much at your own reckoning.”

Anthony Trollope book The Small House at Allington