Priestley [said] that each discovery we make shows us many others that should be made.

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.

My life is wondrous, and I appreciate it every day!

The long habit of living indisposeth us for dying.

Good morals lead to good laws.

Usually when I'm trying to establish character, I try and find out where they live.

I think I always play good, always played solid.

Being bullied means you’re special and that’s what I want all kids to know.

Like thousands of other boys, I had a little chemical laboratory in our cellar and think that some of our friends thought me a bit crazy.

Love is a capricious creature which desires everything and can be contented with almost nothing.

Progress must not become progressivism, where success is measured only by achieving pragmatic results.

Listen, you bubblehead-up-until-five-minutes-ago.