The more we pour the big machines, the fuel, the pesticides, the herbicides, the fertilizer and chemicals into farming, the more we knock out the mechanism that made it all work in the first place.

No man ever got very high by pulling other people down. The intelligent merchant does not knock his competitors. The sensible worker does not knock those who work with him. Don't knock your friends. Don't knock your enemies. Don't knock yourself.

Every man has a right to utter what he thinks truth, and every other man has a right to knock him down for it. Martyrdom is the test.

Truth is a demure lady, much too ladylike to knock you on your head and drag you to her cave. She is there, but people must want her, and seek her out.

The truth knocks on the door and you say, go away, I'm looking for the truth, and it goes away. Puzzling.

Shakhtar specifically are proud when traditional clubs from Europe come knocking, and I knew it would be quite hard to convince them to let me join City. Listen, I am absolutely thankful for the opportunity they gave me, but I also think I worked my socks off for that club, and it was time to look after my career.

The energy necessary to create a wormhole or to wrap time into nuts is incredible. It's not for us. It's maybe for our descendants who have mastered the energy of this technology. So if one day, somebody knocks on your door and claims to be your great great great great granddaughter, don't slam the door.

If you lock me in the room with a piano teacher for a year I might be able to knock out a rendition of 'Roll Out The Barrel,' but will I ever be a concert pianist? No.

I believe success is preparation, because opportunity is going to knock on your door sooner or later but are you prepared to answer that?

I have been knocked down so many times, as a player and as a person, and I have had the strength, I suppose that has come from my parents, to be able to pick myself each and every single time and go out there in the face of adversity and try my best and perform. I didn't read it up in a book. It's deep down and it's part of my family trait.

Skiing combines outdoor fun with knocking down trees with your face.

With Virgin, I've just loved creating things. And as a private company, I can get away with moving Virgin from records to airlines to train companies to space companies to whatever, without ever having to worry about analysts knocking the value of my stock.

There was a time when I was knocking on doors and concerned with being recognized in dominant culture. I've found a space where the terrain is different, where I'm embraced by people like me, and where I'm building new ways of doing things, as opposed to trying to insert myself in a place that might not be welcoming.

I don't know what other fighters do, but when I get hit and go down, I smile and I say, 'I'm going to hit you harder than you hit me, and I'm going to knock you out.' The times I go down and get back up - that's when I'm the most dangerous.

It is clear I was never the Pretty Girl. I had my two front teeth knocked out when I was 10 and didn't fix them until I was 19. I have a crooked smile and a nose that looks like it's been broken 12 times but never has been. My nose was always red, so people called me Rudolph. My whole face is off-center.

The sad truth is that opportunity doesn't knock twice.

So I say to you, Ask and it will be given to you; search, and you will find; knock, and the door will be opened for you.

You have to knock doors, make calls, and build a relationship with voters long before Election Day.

Every night of our lives, we dream, and our brain concocts visions which are, at least until we wake up, highly convincing. Most of us have had experiences which are verging on hallucination. It shows the power of the brain to knock up illusions.

Positive thinking is so firmly enshrined in our culture that knocking it is a little like attacking motherhood or apple pie.

I truly believe that everything that we do and everyone that we meet is put in our path for a purpose. There are no accidents; we're all teachers - if we're willing to pay attention to the lessons we learn, trust our positive instincts and not be afraid to take risks or wait for some miracle to come knocking at our door.

Fortune knocks but once, but misfortune has much more patience.

I feel like I'm a fighter. I've fought my whole life to get to where I'm at. I like fight movies. When someone gets knocked down, I like to root for him to succeed.

Opportunity does not knock, it presents itself when you beat down the door.