Ignorance more frequently begets confidence than does knowledge: it is those who know little and not those who know much who so positively assert that this or that problem will never be solved by science.

There comes a time when the mind takes a higher plane of knowledge but can never prove how it got there.

Having knowledge but lacking the power to express it clearly is no better than never having any ideas at all.

Never stop learning knowledge doubles every fourteen months.

I was bold in the pursuit of knowledge never fearing to follow truth and reason to whatever results they led and bearding every authority which stood in their way.

What we used to say was whoever had the bow tie got to lead the band. There was never any jealousy.

I don't get jealousy I don't get how people hate each other - I never did.

Lovers may be and indeed generally are enemies but they never can be friends because there must always be a spice of jealousy and a something of Self in all their speculations.

Lovers may be - and indeed generally are - enemies but they never can be friends because there must always be a spice of jealousy and a something of Self in all their speculations.

There is never jealousy where there is not strong regard.

Jealousy is never satisfied with anything short of an omniscience that would detect the subtlest fold of the heart.

Never underestimate the power of jealousy and the power of envy to destroy. Never underestimate that.

Guard with jealous attention the public liberty. Suspect everyone who approaches that jewel. Unfortunately nothing will preserve it but downright force. Whenever you give up that force you are inevitably ruined.

Our Soviet espionage efforts had virtually never or had very seldom produced any worthwhile political or economic intelligence on the Soviet Union.

I found that our Soviet espionage efforts had virtually never or had very seldom produced any worthwhile political or economic intelligence on the Soviet Union.

I never threatened him and no Syrian intelligence officer has ever pointed a gun to his head.

The only people that ever stand up and tell the truth are who? Intelligence officers. Because our culture is never break faith with the truth. We'll tell you you don't have to drag it out of us.

I can remember when I was National Security Adviser the intelligence community told us... they put out an intelligence report saying that Iran would never back off from attacks on shipping in the Gulf if we use force.

I did my military service from 1989 - 92 and I was never shot at or had to fire on anybody. I was very lucky. I was more involved in intelligence and counter-intelligence.

I do not - I never believed it's better to kill a terrorist than to detain him. We want to detain as many terrorists as possible so we can elicit the intelligence from them in the appropriate manner so that we can disrupt follow-on terrorist attacks.

As Prime Minister Netanyahu and Defense Minister Barak have repeatedly said the intelligence and security relationship between the United States and Israel at present is unprecedented. It has never been stronger.

I've always wanted to be a spy and frankly I'm a little surprised that British intelligence has never approached me.

I apologize for being obvious but every time I watch the curtain come down on even a halfway decent production of a Shakespeare play I feel a little sorrowful that I'll never know the man or any man of such warm intelligence.

They say military have the so-called 'secret intelligence' - this amount of intelligence must be very secret since I've never seen any intelligent military person nor I have seen any sense in the bloody stupid wars.