The secret of all those who make discoveries is that they regard nothing as impossible.

If you want to become a chemist, you will have to ruin your health. If you don't ruin your health studying, you won't accomplish anything these days in chemistry. Liebig's advice to Kekulé.

Chocolate is a perfect food, as wholesome as it is delicious, a beneficent restorer of exhausted power...it is the best friend of those engaged in literary pursuits.

Chemistry, in its application to animals and vegetables. Endeavours jointly with physiology to enlighten us respecting the mysterious processes and sources of organic life.

Observation is like a piece of glass, which, as a mirror, must be very smooth, and must be very carefully polished, in order that it may reflect the image pure and undistorted.

The more fodder, the more flesh; the more flesh, the more manure; the more manure, the more grain.

A fact acquires its true and full value only through the idea which is developed from it.

If it is impossible to judge merit and guilt in the field of natural science, then it is not possible in any field, and historical research becomes an idle, empty activity.

The progress of mankind is due exclusively to the progress of natural sciences, not to morals, religion or philosophy.

In the progressive growth of astronomy, physics or mechanical science was developed, and when this had been, to a certain degree, successfully cultivated, it gave birth to the science of chemistry.

In this apparatus is nothing new but its simplicity and thorough trustworthiness. On his revolutionary method of organic analysis.

We were all survivors—every last one of us who limped our way out to the sidewalks that afternoon and spit in Death’s cold face.

Some days the dragon wins.

I'm sorry you leftists, you're not the only people whose motives are pure.

Fools talk, cowards are silent, wise men listen.

Love has its name borrowed by a great number of dealings and affairs that are attributed to it--in which it has no greater part than the Doge in what is done at Venice.

Every time I see niqabs, I feel very uncomfortable because it's the opposite of my idea of opened society.

You don't need to know the word of God; you need to know the God of the word.

A lot of times your spouse sees things about you that you don't necessarily see.

The dynamic of a relationship changes when one person gets sober.