Our ideas are only intellectual instruments which we use to break into phenomena; we must change them when they have served their purpose, as we change a blunt lancet that we have used long enough.

It is what we know already that often prevents us from learning.

The experimenter who does not know what he is looking for will not understand what he finds.

When we meet a fact which contradicts a prevailing theory, we must accept the fact and abandon the theory, even when the theory is supported by great names and generally accepted.

Man can learn nothing unless he proceeds from the known to the unknown.

The terrain is everything; the germ is nothing.

Art is 'I'; science is 'we'.

A fact in itself is nothing. It is valuable only for the idea attached to it, or for the proof which it furnishes.

Those who do not know the torment of the unknown cannot have the joy of discovery.

Science increases our power in proportion as it lowers our pride.

All the vital mechanisms, varied as they are, have only one object, that of preserving constant the conditions of life in the internal environment.

The power of waiting is gracious.

Abraham Lincoln said, Patents Add Fuel to the Fire of Genius. What the great man did not say is that Too Much Fuel Can Burn the Genius

They went into stores to get food to stay alive. Looting isn't the right word. I call it survival.

I was born and brought up in Liverpool with my clever little sister Jemma, who is 14 and wants to be a vet. My mum Jane is an administrator and my dad Peter is a taxi driver.

My mixed-race background made me a broad person, able to relate to different cultures. But any woman of colour, even a mixed colour, is seen as black in America. So that's how I regard myself.

I don't like to talk about myself that much.

Rap is the new rock 'n' roll. We the real rock stars, and I'm the biggest of all of them. I'm the No. 1 rock star on the planet.

I'm always going to keep your heart safe, even if mine has to stop beating for that to happen.

Because I don't see Virgin as a company but as a way of life and I fully enjoy it, I don't think I'll ever retire.

The Muse is mute when public men Applaud a modern throne.