The investigator should have a robust faith - and yet not believe.

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.

Two types of leaders: there are thinkers and there are doers. Some are idea generators and others are the implementers.

The freshmen bring a little knowledge in and the seniors take none out so it accumulates through the years.

Time is running out for the climate

to be honest and yet popular is almost as difficult in literature as it is in life.

The only currency that will heal every culture is ceaseless love.

To a right-winger, unions are awful. Why do right-wingers hate unions? Because collective bargaining is the power that a worker has against the corporation. Right-wingers hate that.

The opportunity to carry water every night to James Earl Jones on stage is a dream come true.

You can power the entire U.S. vehicle fleet with 73,000 to 145,000 five-megawatt wind turbines. That would take between one and three square kilometers of footprint on the ground.

Yeah, well, that's what you said the last time it did this, and it was doing it that time too,' Tiercel said waspishly. Clear as mud,' Harrier muttered.

You don't need an alarm clock when you sleep with 20 models a night, one of those broads'll figure out that they better make breakfast in bed or I'll kill all of them.