Aaron Klug
Aaron Klug

The work requires a moderately large investment in technological and theoretical developments and long periods of time to carry them out, without the pressure to achieve quick or short term results.

Adam Clarke
Adam Clarke

Prayer requires more of the heart than of the tongue.

Adam Cohen
Adam Cohen

If the courts regarded tweets and other social media information as private, it would not prevent the law enforcement from getting information it really needs. But the government would have to get a search warrant, which requires it to show that it has probable cause connecting what is being searched to a crime.

Adam Ondra
Adam Ondra

Bouldering on real rock, which I'm more used to climbing on, is a lot more static and requires mostly finger power, whereas competition-style boulder problems are about coordination.

Adama Traore
Adama Traore

I have trained with expert sprinters many times and they all agree running with the ball and running without the ball requires two completely different techniques.

Adrianne Palicki
Adrianne Palicki

I like a grizzly look as long as it's maintained. Facial hair requires maintenance; you can't just grow it out and be done with it.

Aeschylus
Aeschylus

Happiness is a choice that requires effort at times.

Aga Khan IV
Aga Khan IV

A secure pluralistic society requires communities that are educated and confident both in the identity and depth of their own traditions and in those of their neighbours.

Ahmed Chalabi
Ahmed Chalabi

To handle the economy and services in a country like Iraq requires delegation of authority and the choice of competent people.

Ajit Pai
Ajit Pai

Next-generation networks are hard to build. It takes a lot of money and effort to lay fiber, install wireless infrastructure, build satellite earth stations, and more. It also requires a reasonably certain business case for deployment, which is all too often hard to prove in parts of the country with sparse population and/or lower incomes.